WO2018015683A1 - Method of constructing a database of users - Google Patents

Abstract

The invention deals with a method of constructing a database (100) of users of mobile telecommunication terminals. It comprises the following steps: - first user data are transmitted by means of a first program of an email intended for the user; - first terminal data (23) are transmitted, the terminal data (23) forming a first set (23); - each first user datum (22) is associated with the first set (23); - second user data (71) are transmitted by means of a second program of an application consulted by the user; - second terminal data (23) are transmitted, the terminal data (23) forming a second set (23); - each second user datum (71) is associated with the second set (72); - a comparator (98) compares the first and second sets (23, 72).

Description

 Method of constituting a database of users

 The invention relates to the dissemination of advertisements on mobile terminals.

 It is known to collect remote data relating to Internet users in order to subsequently send them advertising or commercial messages. Thus, when a user uses a desktop computer type PC, it is known to associate this user with a consumer profile and its email address. When the user browses a website via his PC, all his actions can be recorded via the site, for example through protocols using "cookies", so as to create and then enrich his user profile. Thus, the affinities of the user and his consumption habits are known. In this way, the user can be restarted at any time by email, with a message designed according to his user profile. It can be a customer who has left a site without validating the purchase of a product for which he has shown interest, that raises by extolling the merits of this product. It may also be to make visible to the user on the site advertisements related to his past actions, when he visits the site again.

 Targeting a particular consumer based on their past habits, particularly a customer who left without consuming, is called "retargeting". If the "retargeting" on PC, using web browsers, is a known method, retargeting in the context of mobile applications is much more difficult. Indeed, to broadcast targeted advertising on the mobile terminal of a user via a mobile application (and not via a web browser), it is necessary to know the advertising identifier of the terminal, that is to say its "Advertise ID". For advertising content to be relevant, it is necessary to know the past actions of the terminal user and link them to the Advertise ID. But it can also be very interesting to know his e-mail address, as well as his geographical position so that he can transmit the right message at the right time, through the right channel. But today, in the context of mobile applications, there is no solution to simply trace such data by associating them with each other. In other words, the only way to link the Advertise ID, email address, and consumer habits to the same user profile is to manually search for data from different databases. This is a long and complicated job, while it can often be interesting to restart a user hot, that is to say shortly after his visit.

 An object of the invention is to enable the retrieval of relevant data from a mobile terminal user for the purpose of targeting. The invention thus aims to allow the constitution of a database of this type of users.

For this purpose, it is provided according to the invention a method of forming a base of user data of mobile telecommunication terminals, characterized in that it comprises the following steps:

 when a user consults an e-mail by means of a mobile telecommunication terminal, a first program of the e-mail commands the terminal to send at least a first user data relative to the user over a telecommunication network;

 a processing device external to the terminal obtains at least a first terminal datum relating to the terminal, the terminal data or data forming a first set;

 associating the or each first user data with the first set;

 when the user accesses via the terminal an application associated with the email, a second program of the application controls the sending by the terminal of at least a second user data relating to the user on a network of telecommunication;

 the processing device obtains at least a second terminal datum relating to the terminal, the second terminal data or data forming a second set;

 associating the or each second user data with the second set;

a comparator compares the first and second sets; and

 if the first set is identical to the second set, a processing device associates the or each first user data associated with the first set with the or each second user data associated with the second set, within a profile of user.

 The first user data, including the e-mail address, is known to user databases, but unknown to the publisher of the application or site. This is why when the email, which is preferably informative, is sent to the user, the program present on the email, which can be called "tag" or "pixel", sends this or these first user data , that it contains, to a treatment device. On the other hand, the program can not of course access certain data: it does not make it possible to know the "Advertise ID" of the user, it does not make it possible to put back consumer information of the user. This is why a processing device requests to obtain the first terminal data or that will allow to characterize the terminal. This first set of first terminal data thus forms a signature, or a fingerprint, of the terminal. In other words, the device calculates a fingerprint of the terminal.

In a second time, another program, tag or pixel, present on the application, allows him to go up the Advertise ID. On the other hand, this second program does not know the email address of the user. This is why the device again requests to obtain terminal data, called second terminal data, forming the second set. It is therefore to calculate a fingerprint of the terminal, again.

 To associate the first user data, sent by the first program of the email, to the second user data, reported by the second program, the two sets of terminal data are compared. If they are identical, it means that the terminal used is the same. For example, the email address can be associated with the user's Advertise ID. It is then possible to target this user by sending him emails and showing advertisements on the application.

 Thus, the invention makes it possible to simply group relevant data concerning a user in order to be able to restart it.

 Preferably, the first user data or data comprise an email address of the user, in particular in encrypted form.

 Advantageously, the second or second user data comprise an identifier of the terminal associated with advertising functions.

 This identifier is generally called "Advertise ID", but each terminal manufacturer has its own name.

 Preferably, the at least one terminal data comprises at least one of the following terminal data:

 - a version of the operating system of the terminal;

 a geolocation address of the terminal;

 an IP address of the terminal;

 - a manufacturer's or seller's mark of the terminal;

 - a screen resolution of the terminal; and

 - a serial identifier of the terminal.

 These data form the first and second sets that are sent in two stages from the terminal. They form "fingerprints" or "signatures" of the terminal. These data thus make it possible to characterize a terminal, and therefore, when a first set is identical to a second set, to associate all the data that is already associated with these respective sets, such as the email address on the one hand and the Advertise ID on the other hand.

 Advantageously:

after the implementation of the preceding steps, when the user consults the application by means of the terminal, application tracing software obtains at least a third user data relating to the user; the software controls the sending by the terminal of the or each third user data over a telecommunication network; and

 the processing device associates the or each third user data with the profile of the user.

 Thus, each time the user browses the application again, his actions are known and recorded. They make it possible to enrich one's user profile and thus to better know the user in order for example to present him future advertisements in adequacy with his profile. The more his profile is known and enriched, the more messages that will be sent to him or made visible to him may be relevant.

 Preferably, the third user data comprises at least one of the following data:

 a geolocation data of the user;

 - data relating to a user action on the application;

 - data relating to a history of the user's journey on the application;

- data relating to a user's purchase history on the application;

 - data relating to a purchase intention of the user; and

 a datum relating to affinities of the user.

 Advantageously, a second email is prepared taking into account at least one of the user data and the second email is sent to the user.

 Thus, the second email is relevant because it targets the user based on what is known to him. It is therefore intended to be more effective than an impersonal document. It is specified here that if this second email is prepared taking into account at least one of the second user data, it is not necessary that it incorporates such data. Indeed, it can include information resulting from these data and not understand the data itself.

 Preferably, the second email includes at least one of the user data obtained in the previous steps.

 It may be for example to address the user using his name and surname.

Preferably, when a device detects that the user performs a predetermined action, the display, broadcast or sending of a message on the terminal is controlled via a telecommunications network.

 Advantageously, the predetermined action comprises the arrival of the terminal in a predetermined geographical area, in particular an area associated with a data item of the user's profile, for example relating to a point of sale.

For example, if it is known, in view of its actions on the application, that the user appreciates a certain type of product, it can be interesting to send him an email when he approaches a point of sale of this type of product.

 Preferably:

 a processing device obtains at least a fourth user data by means of a terminal via a local telecommunications network, for example of the "Bluetooth" type, and commands its sending on a telecommunication network; and

 the processing device associates the or each fourth user data with the user profile.

 Thus, for example in a store, when a user has turned on the "bluetooth" mode of his terminal and is configured to send information, his passing near a terminal can allow the latter to recover one or more user data and enrich the user profile.

 Advantageously:

 a processing device determines at least one fifth user data relating to the user from the user data already obtained; and

 the processing device associates this or each fifth data item with the user profile.

 For example, some of the known user data may relate to gender, age, occupation, and user affinities. It is then possible to determine another datum that would concern the propensity of the user to be interested in a future product, or a product that he has not previously considered. This data would depend on the aforementioned data, and therefore would not have been raised, but would be deduced by the processing device from the already known user data. It would then be appropriate to advertise this product to this user.

 According to the invention, a method is also provided for constituting a database of users of mobile telecommunication terminals, in which, when a user accesses by means of a mobile telecommunication terminal and via an e-mail to an application associated with the email:

a program of the application obtains at least a first user data item relating to the user and at least a second user data item relating to the user;

 the program controls the sending by the terminal of the or each first and second data over a telecommunication network, and

a processing device associates the or each first datum with the or each second datum within a user profile.

This is actually the special case where the user already has the application, or is redirected by the email to the application. In this case, it is not necessary to remount terminal data because it is not necessary to compare these data. Indeed, the program, or tag, or pixel, goes back by itself the first and second user data.

 Also provided according to the invention is a digital prospecting method for users of mobile telecommunication terminals, which comprises at least once all of the following steps:

 putting on-line a mobile terminal application on a telecommunication network, the application comprising a tracking software able to obtain user data when it is used on a mobile terminal, and

 - Sending on a telecommunications network an email associated with the application and comprising a program adapted to contain user data when used on a mobile terminal.

 Also provided according to the invention is a method of building a database of users of mobile telecommunication terminals, which comprises the following steps:

 when a user consults an e-mail by means of a mobile telecommunication terminal, a first program of the e-mail orders the sending of at least a first user data over a telecommunication network;

 when the terminal receives a first request from a processing device external to the terminal in order to obtain first terminal data relating to the terminal, the terminal sends at least a first terminal data;

when the user accesses via the terminal an application associated with the email, a second program of the application obtains at least a second user data and orders the sending of the or each second user data; and

 - When the terminal receives a second request from the external processing device to the terminal to obtain second terminal data relating to the terminal, the terminal sends at least a second terminal data. It is also provided according to the invention a mobile telecommunication terminal for navigating a mobile application and arranged to implement the above method.

 Preferably, in all the abovementioned methods, the e-mail is sent to the user beforehand.

It can be expected that this email is not prepared by the publisher but by a trusted third party who integrates the program with the email address of the user, unknown to the publisher, in the email. The invention also provides a method for comparing data sets of mobile telecommunication terminals, in which automated means control the following steps:

 - sending to a processing device a first set of terminal data relating to a mobile telecommunication terminal;

 sending a second set of terminal data relating to the terminal to a processing device;

 associating the data of the first set with each other so as to form a first character string;

 associating the data of the second set with each other so as to form a second string of characters;

 - comparison of the first and second chains:

 if the strings are identical, performing a predetermined action relating to a user profile.

 Thus, if all the characters are identical, it is considered that the first and second sets of data are related to the same mobile terminal, otherwise it is considered that the first and second sets relate to different mobile terminals. If a single datum is different, it is considered that the two sets of terminal data come respectively from different terminals.

 Advantageously, the predetermined action comprises a step of associating the first and second sets and user data associated respectively with the first and second sets, within a database so as to create or enrich a profile of user.

 It is also provided according to the invention a computer program, comprising code instructions able to control the implementation of the steps of a method according to the invention when it is executed on a computer.

 It is also provided according to the invention a method of making available the program according to the invention for download on a telecommunications network.

 The invention also provides a system for constituting a database of users of mobile telecommunication terminals, which comprises:

a device capable of generating an e-mail arranged so that, when a user consults the e-mail by means of a terminal, a first program of the e-mail commands the sending by the terminal of at least a first relative user data; to the user on a telecommunication network;

a processing device capable of obtaining at least a first terminal data relating to the terminal, the first terminal data or data forming a terminal; first set, and at least one second terminal data relating to the terminal, the second or second terminal data forming a second set;

means capable of associating the or each first user datum with the first set;

 an application associated with the email and arranged so that, when the user accesses by means of the terminal to the application, a second program of the application controls the sending of at least a second user data relating to the application; user;

means capable of associating the or each second user data with the second set; and

 a processing device arranged so that, if the first set is identical to the second set, the processing device associates the or each first user data associated with the first set with the or each second user data associated with the second set; , within a user profile. It also provides a database resulting from the implementation of a method according to the invention and comprising an electronic recording medium comprising in registered form at least one of the following data:

 - data relating to a user action on a mobile application;

 data relating to a history of a user's journey on a mobile application;

 - data relating to a history of purchases of a user on an application;

- data relating to a purchase intention of a user;

 - data relating to affinities of a user;

 a courtesy data of a user;

 - an address of a user;

 - a screen size of a terminal; and

 a socio-professional category data of a user.

 We will now present embodiments of the invention in support of the attached figures, which are provided by way of examples and are not limiting in nature, in which:

 FIG. 1 illustrates a method of constituting a database of users of mobile telecommunication terminals according to a first embodiment of the invention;

 FIG. 2 illustrates a method for comparing sets of mobile terminal data according to an embodiment of the invention;

FIGS. 3 to 5 illustrate the possibilities of collecting user data according to modes of implementation of the invention which can be accumulated; and FIG. 6 illustrates a method of constituting a database of users of mobile telecommunication terminals according to a second embodiment of the invention.

 In all the following, even if it is not specified, it is assumed that the various elements implementing the method of the invention (terminals, devices, database, etc.) communicate with each other when necessary on a or several wireless telecommunication networks such as a mobile phone network, a Wi-fi network or Bluetooth. Moreover, all these elements are equipped with at least one processor and at least one memory and able to control and / or implement the operations that concern them in what follows when a suitable computer program is set implemented in these elements. It is also planned to make such programs available on a telecommunication network for download. First embodiment

In the examples that follow, the invention is used by two types of actors. First, there are the publishers, that is to say the mobile application managers concerned by the invention. They want to be able to target consumers who have used their apps. They want to be able to revive them with relevant advertising, because in line with the interests of each consumer.

 The other actors are the consumers. In the rest of the application, they will be called users or mobile users (for mobile terminal users). It is the individuals who download the mobile applications from the publishers and use them. After browsing these applications, they will receive from the publishers personalized information, advertisements, by email or via advertising space arranged on these applications.

 The invention operates in two stages. First, it's about collecting user data. The next step is to use this data to send the right message at the right time through the right channel.

Collection of data

We will firstly describe, with reference to FIG. 1, a method of data collection, that is to say of constituting a database of users of mobile telecommunication terminals.

In the following, we will talk about a publisher as the person in charge of the application mobile, and of a user as the person using it, in accordance with the preceding definitions.

 Different elements are to be identified for the good understanding of the invention:

the mobile application 2, illustrated in FIG. 1, designed by the editor, is in the following example an application of m-commerce, that is to say that it allows the user to inquire on products and possibly buy them directly via the app.

 the mobile terminal 3 of the user 1 does not have at the beginning of the method the mobile application 2 of the editor, and is a smartphone. This could be a tablet or other type of mobile terminal communication over a wireless telecommunications network such as a mobile network, a Wi-Fi network or Bluetooth.

 - The informative email 11 is related to the mobile application 2, that is to say that its content is advertising this application or deals with a subject associated with the application. At the beginning of the process, it is present in a database 12 connected to a processing device 14, in the form of an e-mail to be sent.

 This collection process divides itself into two stages. First, it is to perform the first feedback of users, associated with a set of data characterizing the mobile terminal of each of them.

 A first step 10 comprises sending the informative mail 11 to a user, by a processing device such as a server 14. The sending is done via the internet, as all the exchanges described below between the mobile terminal and the various treatment devices. User 1 is not known to the publisher. This is an individual who has previously agreed that his email address be recorded in a database 12. In this database, users are classified according to various criteria, such as their socio-professional category, their age and their sex. Thus, the publisher can request that the email be sent to all mobile users corresponding to certain criteria. However, he does not know their personal data.

 The email 11, which can also be called "newsletter", is written in html format and is "responsive design", that is to say it is adapted for reading on a mobile telecommunication terminal, such as a smartphone or tablet and is arranged to adapt its display format and dimensions of the terminal screen. It includes images, links and / or text, which can recall the graphic charter of the editor, that is to say that of the mobile application.

This informative email includes a link to application 2, which redirects to a download page if application 2 is not already registered on the device. It also includes a program 13. This program can be called "tag" or "pixel". This program contains first user data and code instructions, which, when the e-mail is opened by the user's mobile terminal, command in step 20 sending the first data 22 of the user. user through this terminal and via a telecommunication network to a processing device 21 accessible by the publisher. These first user data 22 are in particular the user's email address in encrypted form. It is more particularly the so-called "md5" imprint of the user's e-mail address. The data 22 also include the address of the database, the source of this md5, so as to be able to find it. They also include the user's courtesy data, socio-professional category, age, and possibly other data, such as geolocation data. This can be all categories of data in the database.

 Thus, when the user reads the email, the imprint md5 of his email address becomes known by the publisher. By a conventional web service system well known to those skilled in the art, the email address itself is found from the md5 of this address. However, it is not usable until it is associated with a particular user, that is, a user profile. Indeed, it is relevant to send information to the email address of a user whose consumption habits are well known and who is well identified. This is the main objective of the invention.

 For this, in step 30, the processing device 21 sends on the network a request to obtain data 23 relating to the terminal of the user. This is a web request for accessible data in a simple way.

 This data 23 is sent to the device by the terminal at step 40 on the network. This data 23 must be used to characterize the mobile terminal, so that if we find the same data later, we know that they come from the same mobile terminal, and therefore the same user. These data 23 therefore form a set of terminal data. It can also be said that it is a signature of the terminal or a fingerprint of the terminal. This data 23 is in particular the version of the operating system of the terminal, a location-based address of the terminal, an IP address of the terminal, a manufacturer or vendor mark of the terminal, a screen resolution of the terminal, or an identifier of the terminal. terminal series. In other words, it can be said that during this step 40, the processing device 21 calculates a fingerprint of the terminal 3. In total, this fingerprint formed of first terminal data can be composed of twenty data.

Then, in step 50, the device 21 associates these first data of terminal 23 to the first data 22 of the user, including the now decrypted email address, within a database 24. From now on, what is known to the user by the publisher are his first user data 22, including its email address, and first terminal data characterizing its mobile terminal, which can be called terminal fingerprint.

 If the user 1 never downloads the mobile application 2 from the publisher, these data 22 and 23 are irrelevant. However, he is encouraged by the informative email 11, via the link to this effect, to download the application 2, which he does in step 60. Thus, if the user subsequently downloads and browses the mobile application 2, then the method according to the invention makes perfect sense.

 Indeed, the invention provides that a second program 62, or tag, or pixel, is located on the mobile application 2. Unlike the first program 13 present on the informative email, this program 62 does not contain the email address of the user. But it makes it possible to obtain second user data 71, in particular the advertising identifier of the terminal, otherwise called "Advertise ID", and to command its sending by the terminal to a processing device 73. It also contains other second user data, such as a geolocated position. In step 80, the processing device 73 sends on the network a request to obtain second terminal data 72 relating to the user's terminal. This is a web request for accessible data in a simple way. This data 72 is sent to the device by the terminal at step 90 on the network. This data 72 must make it possible to characterize the mobile terminal. This is again a fingerprint of the terminal. These second terminal data 72 are therefore in this case the version of the operating system of the terminal, a geolocated address of the terminal, an IP address of the terminal, a manufacturer or vendor mark of the terminal, a screen resolution of the terminal. terminal, or a serial identifier of the terminal. In other words, it can be said that, during this step 90, the processing device 73 calculates a second imprint of the terminal 3.

The second user data 71 and the second terminal data 72 are associated with each other by the processing device 73 in the database 74 in step 95. In the database 74, the second set 72 terminal data is therefore associated with the second user data 71, such as the "Advertise ID". This "Advertise ID" is an important piece of information: this identifier makes it possible to send advertisements directly on the screen of the mobile terminal of the user, in advertising space provided for this purpose on the mobile application of the publisher, for example . However, in this database 74, we do not know his email address. We do not know his civility data, his category socio-professional or his age.

 Let's recap where we are. At this moment, the data of the user 1 are distributed in two places:

 - In the database 24 are his civility data, his email address, his socio-professional category. These are the first data 22 of the user. They are associated with a first set of data 23 of its terminal.

 in the database 74 are its advertise ID, as well as other user data. They form second user data 71. They are associated with the second set 72 of terminal data.

 Since the invention performs these steps for many users, two separate databases 24 and 74 are obtained comprising first user data associated with first sets for one, and second user data associated with second ones. sets for each other. However, the objective is to be able to group this data within user profiles, in order to determine for the same user his email address and his advertise ID, with other user data sent back by the "pixels", or programs, 13 and 62.

 To allow this grouping, the first and second sets of terminal data 23 and 72 of the respective databases 24 and 74 must be compared in pairs.

 Thus, if a first set is identical to a second set, it is known that these sets come from the same terminal and therefore the first and second user data to which these first and second sets are respectively associated correspond to the same user.

 Thus, with reference to FIG. 2, a method for comparing sets of data of mobile terminals will be described. This is an example presenting terminal data different from data 23 and 72 of FIG. 1, but with the same comparator 98 and the same databases 24 and 74.

 The comparator 98 obtains from the database 24 one of the first sets 96, and the database 74 one of the second sets 97.

 These sets 96 and 97 are then written in the form of strings. Thus, each character string includes all the data of the set in question joined end to end following each other in a predetermined order.

The comparator performs a comparison of the two strings character by character. Thus, the first characters 93 and 94 respectively of each set are compared. If they are identical, the comparator compares the following characters, and so on. If the comparator determines that certain respective characters of the two sets are not identical, as is the case with the characters 91 and 92 of FIG. 2, it stops the comparison and sends as a result to a processing device 99 that the terminals whose come these sets 96 and 97 are not the same terminal. The comparator then proceeds to the next comparison, consisting in comparing the first set considered this time with the second following set of the base 74.

 On the other hand, if, as in FIG. 1, the comparator 98 determines that the first and second sets 23 and 72 are identical, this means that the terminal data of each set comes from the same terminal 3.

 The processing device 99 then associates the data associated with each set in step 130. In particular, the email address associated with the first set 23 is associated with the Advertise ID associated with the second set 72. The first and second data of the user 22 and 71 are therefore known, associated with each other and enrich a user profile 91 in a database 100.

 The comparator thus reconciles the two databases to determine which are the first and second sets that correspond to the same terminal and thus constitute usable user profiles. As a reminder, in these fingerprints terminal include a geolocation data. A terminal that has changed position between the sending of the first and second terminal fingerprint therefore does not allow the reconciliation between the first and second user data. This geolocation data is however necessary to limit the number of impressions to be compared, for example by comparing fingerprints with geolocation data identical, so as to obtain quick positive results and to create user profiles quickly.

 The first step of the invention is thus finished: the publisher knows relevant information about the user 1 and has means to contact him, by email via his email address or by advertising distribution via the Advertise ID. Subsequently, this profile 91 will therefore allow to recontact the user 1, using the data stored therein. This profile will also be enriched by tracing software 61 that is present on the mobile application 2 and continues to obtain user data when the user 1 browses the application 2.

Tracing software

Indeed, an application tracing software 61 makes it possible to perform the following actions: - record any activity of the user 1 on the mobile application 2 of the editor and order the sending by the terminal of information about this activity;

 - Obtain other user data such as the geographical position of the terminal, if the geolocation of the terminal is provided and granted by the user, and order its sending.

 The software 61 can possibly perform other types of actions, obtain other data and send them over the network.

 Thus, each time the user browses the application 2, data can be deduced from its actions and sent by the terminal to a processing device.

Sending targeted messages

With reference to FIGS. 3 and 4, we will describe the second step of the invention, which consists in setting up "retargeting" or retargeting operations, that is to say, to relaunch the user in a relevant way by means of the invention.

 Figure 3 illustrates a relaunch by a new email 105, or newsletter. This is a method called "email retargeting".

 In step 101, the user navigates on the mobile application and therefore performs actions that give rise to new user data 102 that are obtained by the trace software 61. This is for example a search for a particular product. These new user data 102 can be sent by the terminal to the processing device 99 on the network each time they are obtained, at predetermined time intervals, or when particular actions have been performed by the user. 1, for example when validating a shopping cart of products on application 2.

At a predetermined time, the processing device 99 having received these new user data 102 prepares in step 111 a new informative email 105. Unlike the first informative email 11, sent impersonally to the user 1 to the user. step 10, this new email 105 is designed by the processing device 99 to be personalized. For this purpose, the device 99 uses the user data collected and stored in the database 100 in the user profile 91: the first and second data respectively 22 and 71, but also the new user data 102 which have been provided. For example, the email 105 may be in the name of the user 1 and deal with a product that he particularly liked since he had deposited it in his shopping cart on the mobile application 2, before finally do not pay the payment and validate the purchase. This email 105 may also inform the user that the product is visible at a point of sale near his home. Thus, all the user data that will have been obtained by the tracing software 61 can then send the user 1 a relevant email 105.

 The time of sending this email 105, at step 121, is also important. As will be seen later, a set of parameters dealing with e-mail 105 and its sending may be provided by the publisher. It may for example be relevant to send the email 105 in the minute following the end of the user's visit to the application, or to wait a few hours. This sending is done automatically by the processing device 99, but it can of course be decided manually.

 Finally, unlike the first informative email 11 that has been sent to the user 1 and the application 2, this email 105 does not present a program dating back the first user data. Indeed, the first user data 22 are already known at this stage. Moreover, it is not necessary to wait for the user 1 to navigate several times on the application 2, to restart it. As soon as its first and second user data respectively 22 and 71 have been associated with each other, it can be restarted.

 With reference to FIG. 4, another method of retargeting will be described: "display retargeting" or retargeting by display. This time it is to use the data of the user to display a relevant advertisement on the screen of his mobile terminal, at a relevant time. In the example illustrated, in step 201, the tracing software 61 sends, by means of the terminal on the network, the geolocated position 202 of the user 1 to the processing device 99. The latter determines that the user 1 is near a point of sale in which there is a product for which the user has shown interest via the application. In response, the processing device 99 controls the sending in step 211 of an advertisement 212 on the mobile terminal 3 of the user 1, this advertisement 212 informing the user 1 that a point of sale of a product that interests him is close to him.

This detection of the geographical position of the user could be triggered by the application itself, which then sends an alert to the processing device so that an advertisement is prepared and sent. The dissemination of the advertisement is possible thanks to the knowledge of the advertisement of the user ID 1, always stored in the profile of the user 91 within the database 100. This advertisement 212 is displayed on the application mobile 2, for example in a space provided for this purpose. It is also possible that, the application 2 has not been closed by the user 1 while it is browsing another application, on the internet or simply on a menu of its terminal 3, the advertisement 212 is displayed on its screen, leaving for example the possibility to user 1 to close it after a predetermined time. Advertising 212 is an image. But it can be any other type of content, such as a video, audio, or interactive content asking the user to act.

 The user data 22, 71, 102, 202 thus make it possible to restart the user by means of emails or relevant advertisements, sent at key moments with information related to the profile of the user 1. As a reminder, the first user data 22, including its email address, were obtained before the user 1 has the application 2, via the program 13 of the email 11. The second user data 71, in particular the Advertise ID, were obtained via the program 62 of the application 2. Since its user profile 91 was created, each time the user 1 browses the user, the user's password is entered. 2, new user data is retrieved and sent by the trace software 61 to the device 99 and the database 100.

 But these data are not used raw. They can indeed be analyzed to determine other data. For example, when the user does not validate the purchase of a product, the data brought to the processing device will be linked to this product. The device can deduce from this data that the user might be interested in other similar products, such as those in the same range. By crossing several data, it may be necessary to determine that a particular product, for which the user has not shown interest, could actually interest him. Thus, the user data obtained makes it possible to deduce others, and thus to send e-mails or to broadcast relevant advertisements.

 Figure 5 illustrates a data collection method for a user 5 going to the point of sale. Thus, by means of a terminal 311 communicating according to the "bluetooth" protocol, user data 302 can be collected by the terminal 311 and sent to the network. If the user 5 already corresponds to a user profile, these data 302 can thus come to complete it. In addition, this type of terminal allows brands to analyze and measure consumer visit frequencies at the point of sale. By associating this data 302 with the user data reported by the tracing software, the user profiles are enriched. In order for this Bluetooth communication to work, the user 5 must not have disabled it, and that he has agreed to provide data 302.

On the publisher side, the invention provides a platform for setting up and setting up recovery campaigns. Thus, an editor can choose a geographical area, a start date and an end date of his campaign. The invention will therefore work in the chosen interval and for mobile terminals located in the selected geographical area. The platform also allows to load advertisements the publisher wishes to broadcast, to set parameters regarding the e-mail messages that will be sent, such as the time interval between the user's last visit to the application and sending an e-mail, the type the subject that e-mails must contain, etc.

 This platform could also be used by another type of actor: advertisers. Indeed, it is possible that publishers and advertisers use the invention separately. Thus, the publisher would use the user data to allow advertisers to send emails or broadcast relevant advertisements on the mobile application, without these advertisements necessarily link to the application. The publisher can thus sell user data and / or advertising space to advertisers to enable them to achieve relevant targeting. It is possible in this case that the process is not "retargeting", but "targeting", that is to say simply sending emails or advertisements to users who would not have before asked for 'advertiser. In this case, the first informative email received is not relative to the advertiser. It can be relative to the publisher.

 Finally, the invention provides an "SDK". This is the acronym for "Software Development Kit". It is a set of tools to help computer programming. So it's a set for IT developers. This SDK makes it possible to implement the invention on mobile terminals, and to parameterize it directly by computer programming.

Second embodiment

Referring to Figure 6, we will now describe a second embodiment of the invention for the constitution of a database of users of mobile telecommunication terminals. This embodiment is globally identical to the first. We will describe in the following only the characteristics that differ from the first mode.

This mode is implemented when the user 6 already has the mobile application 2 before receiving the first informative email 11. It is quite possible that he has already downloaded application 2 on his own initiative. As a reminder, the informative email 11 includes a link to the application, which redirects to a download page if the application 2 is not already stored on the terminal 3. It also includes a program 13 able to trace back first user data 22 such as the email address of the user 6. Similarly, the application includes a program 62 able to trace second user data, including the advertise ID. When he receives the informational email 11 at step 10a, if the user 6 opens the application 2 by using the link to it on the email 11, the program 62 is able to obtain the data 22 from program 13 of the email 11. Thus, unlike the first embodiment, the terminal can send the first data 22 as well as the second user data 71 itself via the program 62. Since these first and second data are recovered at the same time, they are automatically associated with each other. In particular, the AdvertiselD and the email address of the user 6 are associated with the user profile 106 by the device 99 in the database 100, at the step 120bis. It is therefore not necessary to obtain terminal data and to compare them. Thus, no fingerprint calculation is necessary. However, it is still possible to request this terminal data so as to record in the user profile a set of data terminal. Even if this is only of limited interest at the time of recording, this set could later be compared to other sets, for example in the case where the user deleted and then downloaded the set again. application on his mobile terminal.

Of course, we can bring to the invention many changes without departing from the scope thereof.

 Thus, the invention is applicable to any type of mobile application, and not only to those of m-commerce.

 In addition, all the technical elements previously described as being separate can of course be grouped together. Thus, a single processing device can perform the functions of the various processing devices described, just as a single database can gradually consolidate all the data obtained by means of the invention. Moreover, one can imagine that a single database includes several tables of data. The invention can operate by means of any telecommunication network, and not only via the internet. Part of the data or all the data can also be stored locally and at least temporarily on the mobile terminal of the user, for example in case of connection impossible with the telecommunications network.

Claims

1. Method of constituting a database (100) of users of mobile telecommunication terminals, characterized in that it comprises the following steps: when a user (1) consults an email (11) by means of a mobile telecommunication terminal (3), a first program (13) of the email (11) commands the sending by the terminal of at least one first user data (22) relating to the user (1) on a telecommunication network;  - A processing device (21) external to the terminal obtains at least a first terminal data (23) relative to the terminal, or the terminal data (23) forming a first set (23);  associating the or each first user data (22) with the first set (23);  when the user (1) accesses via the terminal (3) an application (2) associated with the email (11), a second program of the application (2) commands the sending by the terminal of at least a second user data (71) relating to the user on a telecommunications network;  the processing device obtains at least a second terminal datum (72) relative to the terminal, the second terminal data or data (72) forming a second set (72);  associating the or each second user data item (71) with the second set (72);  a comparator (98) compares the first and second sets (23, 72); and if the first set (23) is identical to the second set (72), a processing device (99) associates the or each first user data (22) associated with the first set (23) with the or each second set of data items. user (71) associated with the second set (72) within a user profile (91). 2. Method according to the preceding claim, wherein the first or the first user data (22) comprises an email address of the user, in particular in encrypted form. 3. Method according to any one of the preceding claims, wherein the second or the second user data (71) comprises an identifier of the terminal associated with advertising functions. The method of any one of the preceding claims, wherein the or the terminal data (3) comprises at least one of the following data: a version identifier of an operating system of the terminal (2);  a geolocation address (2) of the terminal;  an IP address of the terminal;  - a manufacturer's or seller's mark of the terminal (2);  a screen resolution of the terminal (2); and  a serial identifier of the terminal (2). 5. Method according to any one of the preceding claims, wherein: after the implementation of the steps of claim 1, when the user (1) consults the application (2) by means of the terminal (3), application tracing software (61) obtains at least a third user data (102) relating to the user;  the software (61) controls the sending by the terminal of the or each third user data (102) over a telecommunication network;  the processing device (99) associates the or each third user data item (102) with the user profile. 6. Method according to the preceding claim, wherein the third or third user data (71) comprises at least one of the following data:  a geolocation data;  - data relating to a user action on the application (2);  data relating to a history of a user's journey (1) on the application (2);  a data relating to a user's purchase history (1) on the application (2); - data relating to a purchase intention of the user (1); and  a datum relating to affinities of the user (1). 7. Method according to any one of the preceding claims, wherein a second e-mail (105) is prepared taking into account at least one of the user data (71) and the second e-mail is sent (105). to the user (1). 8. Method according to the preceding claim, wherein the second email (105) comprises at least one of the user data obtained in the previous steps. A method as claimed in any one of the preceding claims, wherein when a device detects that the user is performing a predetermined action, the display, broadcast or sending of a message is controlled via a telecommunication network. on the terminal. 10. Method according to the preceding claim, wherein the predetermined action comprises the arrival of the terminal in a predetermined geographical area, in particular an area associated with a data of the user profile, for example relating to a point of sale. 11. The method of any one of the preceding claims, wherein a processing device (99) obtains at least a fourth user data (302) by means of a terminal (311) via a local telecommunication network, for example of the "Bluetooth" type, and commands its sending on a telecommunications network; and  the processing device (99) associates the or each fourth user data (302) with the user profile. The method of any one of the preceding claims, wherein: - a processing device determines at least one fifth user data relating to the user from the user data already obtained;  the processing device (99) associates this or each fifth data element with the user profile. 13. A method of constituting a database of users of mobile telecommunication terminals, characterized in that, when a user (6) accesses by means of a mobile telecommunication terminal (3) and via an e-mail ( 11) an application (2) associated with the email:  - a program of the application obtains at least a first user data (22) relating to the user and at least a second user data (71) relating to the user;  the program controls the sending by the terminal of the or each first (22) and second (71) data over a telecommunication network, and  a processing device (99) associates the or each first data element (22) with the or each second data item (71) within a user profile. 14. Method of digital prospecting of users of mobile terminals telecommunication, characterized in that it comprises at least once all the following steps:  - Putting an application (2) for a mobile terminal on a telecommunications network, the application comprising a tracing software (61) able to obtain user data (71, 102, 302) when it is used on a mobile terminal (3), and - Sending on a telecommunications network an email (11) associated with the application and comprising a program (13) adapted to contain user data (22) when used on a mobile terminal. 15. A method of constituting a database of users of mobile telecommunication terminals, characterized in that it comprises the following steps: when a user (1) consults an email (11) by means of a mobile telecommunication terminal (2), a first program (13) of the email (11) commands the sending of at least a first datum ( 22) of a user on a telecommunication network;  when the terminal (2) receives a first request from a processing device (21) external to the terminal in order to obtain first terminal data (23) relating to the terminal, the terminal sends at least a first data item; (23) terminal;  - when the user accesses via the terminal (3) to an application (2) associated with the email, a second program of the application (2) obtains at least a second user data (71) and commands the sending the or each second user data; and  when the terminal (2) receives a second request from the processing device (21) external to the terminal in order to obtain second terminal data (23) relating to the terminal, the terminal sends at least a second datum (23) terminal. 16. Method according to any one of claims 1 to 13 and 15, wherein is sent before the steps set the email (11) to the user (1). 17. A method for comparing data sets of mobile telecommunication terminals, characterized in that automated means control the following steps:  sending to a processing device (24) a first set (23; 96) of terminal data relating to a mobile telecommunication terminal; sending to a processing device (74) a second set (72; 97) of terminal data relating to the terminal;  associating the data of the first set (23; 96) with each other so as to form a first string of characters;  associating the data of the second set (72; 97) with each other so as to form a second character string;  - comparison of the first and second chains:  if the strings are identical, performing a predetermined action relating to a user profile. 18. The method according to the preceding claim, wherein the predetermined action comprises a step of associating the first and second sets and user data associated respectively with the first and second sets, within a database so as to create or enrich a user profile. 19. Computer program, comprising code instructions able to control the implementation of the steps of a method according to at least one of the preceding claims when executed on a computer. 20. The method of making the program of the preceding claim available for download over a telecommunications network. 21. System for constituting a database (100) of users of mobile telecommunication terminals, characterized in that it comprises:  a device capable of generating an email arranged so that, when a user (1) consults the email (11) by means of a terminal (3), a first program (13) of the email (11) commands the sending by the terminal at least a first user data (22) relative to the user (1) on a telecommunication network;  a processing device (21) capable of obtaining at least a first terminal data item (23) relating to the terminal, the first terminal data or data (23) forming a first set (23), and at least one second terminal data relating to the terminal, the second or second terminal data forming a second set; means capable of associating the or each first user data (22) with the first set (23); an application associated with the email (11) and arranged so that, when the user (1) accesses by means of the terminal (3) to the application (2), a second program of the application (2) controls the sending at least a second user data (71) relating to the user; means capable of associating the or each second user data item (71) with the second set (72); and  a processing device arranged so that, if the first set (23) is identical to the second set (72), the processing device (99) associates the or each first user data item (22) associated with the first set ( 23) to the or each second user data (71) associated with the second set (72), within a user profile (91). 22. Mobile telecommunication terminal (3) for navigating a mobile application and arranged to implement the method of claim 15. 23. Database (12, 24, 74, 100) resulting from the implementation of a method according to any one of claims 1 to 18 and 20, characterized in that it comprises an electronic recording medium comprising in registered form at least one of the following data:  - data relating to a user action on a mobile application;  data relating to a history of a user's journey on a mobile application;  - data relating to a history of purchases of a user on an application; - data relating to a purchase intention of a user;  - data relating to affinities of a user;  a courtesy data of a user;  - an address of a user;  - a screen size of a terminal; and  a socio-professional category data of a user.