JP2017174279A - Server, program, and introduction method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve introduction that has reliability secured with respect to registered users.SOLUTION: A server includes: location information acquisition means that acquires location information of user terminal for each registered user; proximity state discrimination means that discriminates proximity among the registered users due to a distance among registered users based on the acquired location information; proximity history information generation means that records information on proximate other registered user for each registered user; introduction candidate extraction means that, when the number of times in proximity to a specific registered user reaches a prescribed number of times, extract the registered user as an introduction candidate user; relation degree derivation means that derives a relation degree indicative of a degree of a relation with the introduction candidate user on the basis of the proximity history information; reliability degree derivation means that derives a reliability degree of introduction on the basis of a relation property between the introduction candidate user and a third party; introduction determination means that determines whether the relation degree and/or the reliability degree satisfy or satisfies a prescribed condition; and notification means that notifies a user terminal of the registered user serving as an introduced target of the introduction candidate user satisfying a condition of the introduction.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an introduction method, a server in an introduction system, and an introduction program for realizing introduction with guaranteed reliability for a registered user in a community site or the like.

  2. Description of the Related Art Conventionally, there is a function for introducing a person who may register as a friend in a community site on the Internet represented by a social networking service (so-called SNS). For example, it is a function that introduces other users who have a common term based on user registration information, such as school matches, school years, and common friends.

  As what has the feature in such introduction, patent document 1 is mentioned, for example. The friend introduction system described in Patent Document 1 has the purpose of the user of the user terminal heading to the destination based on the destination information recorded in the user information recording unit and the posted information posted on the site by the user of the user terminal. A friend that extracts the user information of the user terminal that has the same destination and the same purpose as the user of the user terminal who wants to receive the introduction of the friend from the user information recording unit as the friend candidate. A candidate extraction unit, and a friend candidate introduction unit that presents user profile information of a user terminal extracted as a friend candidate to a user terminal that is about to receive a friend's introduction.

JP 2009-123084 A

  The introduction function in SNS etc. is a convenient function, but some users of SNS etc. do not want to register friendships except those who have actually contacted in real life, For such a user, there is a risk that it will be annoying if other users who may be friends are introduced without limitation. In addition, in the case of a mechanism that introduces only simple registration information matching points, there is a problem that reliability is not ensured in the contents of the introduction. In the above-mentioned Patent Document 1, users having the same purpose can be introduced, but since the other party is not limited to those who have actually contacted in real life, reliability is always ensured. It wasn't.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide an introduction method, a server, and a program for realizing introduction with a guaranteed reliability for registered users.

  The server according to the present invention is a server capable of communicating with each user terminal of a plurality of registered users via a communication network, and includes position information acquisition means for acquiring position information of the user terminal for each registered user, and the acquired position Proximity state discriminating means for discriminating that the registered users are close to each other based on the distance between the registered users based on the information, and proximity history information for generating information on the proximity of each registered user that records information of other registered users in proximity Introducing candidate extracting means for extracting the registered user as an introducing candidate user when the number of times of proximity between the information generating means and the specific registered user reaches a predetermined number of times, and based on the proximity history information, the introducing candidate user Based on the relationship between the introduction candidate user and the third party, the degree of reliability of the introduction is derived. A degree of reliability deriving means to be introduced, an introduction determining means for determining whether the degree of relationship and / or the reliability satisfies a predetermined condition, and an introduction candidate user who satisfies the introduction condition in the introduction determining means And notification means for notifying a user terminal of a registered user to be introduced as a user.

  With the above configuration, only registered users who have reached the specified number of times of proximity are referred to as introduction candidates, the degree of relationship indicating the degree of relationship with the introduction candidate user, and the relationship between the introduction candidate user and the third party Since it is determined whether or not the condition for introduction is satisfied based on the reliability based on, it is possible to introduce a reliable person who has actually been in contact in real life.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to implement | achieve the introduction by which the reliability was ensured with respect to the registered user of community sites, such as SNS.

It is a block diagram showing the structure of the introduction system 100 by this invention. 3 is a block diagram showing a configuration of a user terminal 20. FIG. 3 is a block diagram showing a configuration of a beacon 30. FIG. It is explanatory drawing about the position identification method by the beacon technique using the radio wave for short-range wireless communication. It is a flowchart figure showing the flow of the process of the introduction by this invention.

[First Embodiment]
The introduction system 100 according to the first embodiment will be described below with reference to the drawings. The introduction system 100 is a system for introduction on a community site for registered users such as an SNS (social networking service), a bulletin board system, and the like, and has a feature in introduction with a reliable reliability. Details will be described below.

  FIG. 1 is a block diagram showing the configuration of an introduction system 100 according to the present invention. In FIG. 1, 10 is a server in the introduction system 100, and 20a to 20n are user terminals of users registered in the introduction system 100. The user terminals 20 a to 20 n can be connected to the server 10 via the communication network 40. Moreover, when using beacon technology for acquiring the location information of the user terminals 20a to 20n, a plurality of beacons 30a to 30n installed indoors or outdoors can be connected to the user terminals 20a to 20n via a communication network. It has become.

  As illustrated in FIG. 1, the server 10 includes a position information acquisition unit 11, a proximity history information generation unit 12, an introduction candidate extraction unit 13, a relationship degree derivation unit 14, a reliability degree derivation unit 15, an introduction determination unit 16, and a notification unit 17. The control unit 18 and the storage unit 19 are provided. The details of each unit will be described later. As a premise, the storage unit 19 stores registered user information 19a managed in a community site such as SNS, and performs various controls in the control unit 18. Yes. The registered user information 19a includes various information such as personal data of the registered user and information on the relationship between registered users such as the relationship of friend registration.

  FIG. 2 is a block diagram showing the configuration of the user terminal 20. As shown in FIG. 2, the user terminal 20 includes a communication unit 21 that performs communication with the server 10 and a beacon 30 described later, a control unit 22 that performs various controls in the terminal, and a storage unit 23 that stores necessary information. An input / output unit 24 that accepts an operation input from a user and outputs it to a display, a GPS 25, a gyro sensor 26, an acceleration sensor 27, a sound collecting microphone 28, and a short-range wireless communication function 29. ing.

  FIG. 3 is a block diagram showing the configuration of the beacon 30. A communication unit 31 that performs communication, a control unit 32 that controls various processes, and a storage unit 33 that stores identification information for uniquely identifying itself and other necessary information are provided. Note that the communication unit 31 includes at least a function (particularly a transmission function) responsible for communication with the user terminal 20, and may further include a function responsible for communication with the server 10 as necessary.

  The position information acquisition unit 11 is configured to acquire the current position of the user terminal 20, and a specific position acquisition method is based on longitude / latitude information by a GPS (Global Positioning System) 25 included in the user terminal 20. A position identification method based on the RSSI (Received Signal Strength Indicator) information of the user terminal with respect to the radio wave from the base station, a position identification method based on the RSSI information of the user terminal with respect to the radio wave of the wireless LAN, A position identification method using beacon technology using radio waves for short-range wireless communication can be considered. The user terminal 20 acquires information that can identify its current position by any of these methods, transmits the information to the server 10 via the communication unit 21, and receives the current position of the user terminal 20 in the received server 10. Identify and record this. The recorded position information is stored as position information 19 b in the storage unit 19 of the server 10.

  FIG. 4 is an explanatory diagram of a position specifying method based on beacon technology using a short-range wireless communication radio wave. In FIG. 4, four beacons 30a, 30b, 30c, and 30d having a function of transmitting radio waves for short-range wireless communication are arranged indoors in a building, and these beacons 30a to 30d are transmitted. Based on the RSSI information when the user terminal 20 receives the radio wave, the current position of the user terminal 20 is specified. Specifically, the user terminal 20a is located closest to the beacon 30a, next to the beacon 30b, third closest to the beacon 30c, and farthest away from the beacon 30d. Yes. In this case, the RSSI value based on the radio wave from each beacon is also a value with a strong reception intensity from a short distance. By using the information on the initial positions of the four beacons and the four RSSI information, the current position of the user terminal 20a can be specified. In theory, if there are three beacons 30, the position can be specified. However, in practice, an error occurs in RSSI information due to the influence of radio wave interference reflected on the wall surface or the presence of obstacles. Determination with many beacons 30 is preferable. If such a beacon technique is used, it is possible to acquire more accurate position information indicating where the user terminal 20 is located indoors. According to this beacon technology, not only that registered users were in the same building at the same time, but also acquired detailed proximity information between registered users that they were close enough to talk It becomes possible.

  The proximity history information generation unit 12 is configured to create and store a history of proximity to other registered users for each registered user. First, the location where the registered user stayed is recorded based on the position information acquired in the position information acquiring unit 11 for each registered user. At this time, a place where the user has just passed is excluded, and a place where the user has stayed for a certain period of time is recorded. Thereby, the action history which recorded when and where the registered user stayed is created. This action history information is checked against records of other registered users to determine whether or not they are in proximity to other registered users, and if the proximity is determined, that is, stay at the same place at the same time. If there is another registered user that has been registered, data that can identify the registered user, such as a user ID, is recorded as proximity history information together with position information. In this example, data registration is performed in the server 10 to extract registered users in the vicinity, but other methods include, for example, NFC (Near Field Communication), infrared communication, Wi-Fi, Bluetooth (registered trademark). Adopting a mechanism that makes it possible to determine whether a communication partner is a registered user by performing communication between two terminals by the short-range wireless communication function 29 that enables direct communication between terminals such as ultrasonic communication You may do it. As described above, if it is possible to determine that the close partner is a registered user without using the server 10, it is possible to analyze the behavior with the close partner and the like. The created proximity history is stored in the storage unit 19 of the server 10 as proximity history information 19c. The proximity history information 19c has been described as storing the date and time of proximity, the time of proximity, the place where the user stayed at the time of proximity, and the user IDs of other registered users in proximity, depending on the embodiment. In some cases, it is not necessary to store all of the information. For example, when the information on the proximity location is not used, the information may not be stored.

  The introduction candidate extracting unit 13 is configured to check the proximity history in order to confirm whether the registered user is close to the other registered user in the past when the proximity of the registered user and the other registered user is confirmed. When the proximity history information 19c created in the information generation unit 12 is referred to and it is confirmed that the other registered user is in the past, the other registered user is extracted as an introduction candidate user. As a condition at this time, it may be extracted as an introduction candidate when approached once in the past and approached for the second time, or may be extracted as an introduction candidate when approached after the third time, This is an item that can be set as appropriate.

  The degree-of-relationship deriving unit 14 is configured to derive the degree of relationship between the introduction candidate user extracted by the introduction candidate extraction unit 13 and the introduction target user who is a registered user to be introduced. The degree of relationship here is a parameter representing the relationship between the introduction candidate user and the introduction target user, evaluation based on the number of times of proximity when referring to the proximity history information 19c, An evaluation based on the length of time that was close may be considered.

  The reliability deriving unit 15 derives the reliability of whether or not to actually introduce based on the relationship between the introduction candidate user extracted by the introduction candidate extracting unit 13 and the third party. The reliability here is a parameter for evaluating whether the introduction candidate user is a person who is sufficient for the introduction. Various methods can be considered for the determination of the reliability, but the number of friend registrants who are common with the other registered users, the number of times the other registered users have canceled friend registration, and the period until they are canceled, The reliability is derived based on various factors such as the number of good evaluations on the articles of other registered users. As a specific method for deriving the reliability, a threshold value may be provided for each element for determination, or a numerical value may be derived by quantification.

  The introduction determination unit 16 is configured to determine whether or not to introduce the introduction candidate user to the introduction target user based on the derived degree of relationship and reliability. Various conditions can be set for the introduction candidate user to be the introduction target user when the conditions are met. For example, if both the relational threshold and the reliability threshold are exceeded A method is considered. The introduction determination unit 16 may determine the introduction based only on the degree of relationship, or may determine the introduction based only on the reliability, and can be set as appropriate according to the embodiment. is there.

  The notification unit 17 notifies the user terminal 20 of the introduction target user of introducing the introduction candidate user determined to be introduced by the introduction determination unit 16 as the introduction target user. The notification at this time is preferably performed in a form in which a link is provided so that the registered information of the other party can be referred to. Upon receiving this notification, whether or not to register a friend with the introduction target user is up to the user to be introduced, and when registering a friend, the registration result is stored in the registered user information 19a of the storage unit 19. Remembered.

  FIG. 5 is a flowchart showing the flow of introduction processing in the introduction system 100 according to the present invention. In the introduction system 100 according to the present invention, as shown in FIG. 5, first, location information of a registered user is acquired (S01). This acquisition of position information is always performed at predetermined intervals, and is performed and recorded for each registered user. Based on this position information, it is determined whether or not the user has approached another registered user (S02). When there is no proximity with other registered users (S02-No), acquisition of the position information of itself is continued.

  When there is a proximity with another registered user (S02-Yes), it is determined whether or not the proximity with the other registered user is equal to or more than a predetermined number of times set in advance (S03). Here, the predetermined number of times set in advance is a setting for enabling extraction as an introduction candidate from at least the second and subsequent proximity based on the idea that reliability is not ensured by introducing from the first proximity, It can be appropriately set to a value of 2 times or more. When the proximity with the other registered user is less than the predetermined number of times (S03-No), a proximity history with the other registered user is created and the process ends (S08). When the proximity with the other registered user is equal to or more than the predetermined number of times (S03-Yes), the other registered user is set as the introduction candidate user, and the introduction target user introduced as the introduction candidate user Based on the relationship, the degree of relationship is derived (S04).

  Information such as the number of times of proximity and the time of proximity is used to derive the degree of relationship. After deriving the degree of relationship, the reliability of whether or not to actually introduce is derived based on the relationship between the introduction candidate user and the third party (S05). For the derivation of reliability, there are common friends, the number of times the friendship has been canceled by other registered users does not exceed the predetermined number, and the evaluation from other users on posted articles etc. is high Affects. Which of these is emphasized depends on the judgment for each community site or the judgment for each registered user that can be set by the registered user.

  After deriving the relationship level and the reliability level, it is determined whether or not to introduce the introduction candidate user based on them (S06). As a determination method, for example, a method in which both the threshold value of the relationship level and the threshold value of the reliability value are exceeded can be considered. In addition, a threshold value that can be determined to be introduced using only the value of the relationship level or the value of the reliability level may be provided. If the introduction condition has not been cleared (S06-No), a proximity history with the other registered user is created and the process ends (S08). When the conditions for introduction are cleared (S06-Yes), a notification for introducing the other user is made (S06). Also in this case, after giving the notification, the proximity history with the other registered users is created and the process ends (S08).

  As described above, according to the introduction system 100 according to the present invention, a person who has approached at least twice in real life and who has satisfied the introduction condition of the degree of relationship and reliability is introduced. As a result, it is possible to make referrals with credibility.

[Second Embodiment]
In the first embodiment, as a method of using the acquired location information, it is simply used to determine whether or not the user is in proximity with other registered users. However, the information on the proximity location acquired based on the location information is used. May be used to determine the degree of relationship. Here, the location information means not only the name of the building but also information on the location as detailed as possible within the range that can be specifically acquired, such as the location of the room and the purpose of use.

  Here, in consideration of the fact that the relationship with the other party is completely different depending on the close position, weighting is performed in advance on the location information in consideration of the influence on the derivation of the degree of relationship, and the server 10 is used as the weighting information 19d. Is stored in the storage unit 19. For example, if you happen to sit near a lecture hall in a large venue with a scale of 100 people, there is a possibility that you may not even recognize each other rather than having a conversation, but there are several people in a private room of a restaurant If you are at the same time, you can determine that there is a high probability of having a conversation and recognizing each other's existence. Weighting information 19d is provided in advance, and the degree of relationship is derived in accordance with the weighting of nearby places in the process of deriving the degree of relationship in the relationship degree deriving unit 14. As for the above example, weighting is performed so that the numerical value of the degree of relation is greater when sitting in a private room of a restaurant than when sitting nearby in a lecture.

  As described above, by using the importance of the nearby place based on the weighting information 19d as a material for deriving the degree of relationship, it is possible to introduce more highly reliable.

[Third Embodiment]
In the first embodiment, by using inter-terminal communication by the short-range wireless communication function 29 such as beacon technology or NFC for acquiring position information, the distance between the registered users is close enough to allow conversations. Until then, it could be obtained as information, but no further information could be obtained. Therefore, in order to more accurately estimate whether or not two adjacent persons actually talked, the gyro sensor 26, the acceleration sensor 27, the sound collection microphone 28, and the like provided in the user terminal 20 may be used. Good.

  For example, when the location information acquisition unit 11 senses that registered users have come close to each other, or the terminal 20 recognizes that the other party is a registered user directly by inter-terminal communication using the near field communication function 29 such as NFC. In this case, the gyro sensor 26, the acceleration sensor 27, the sound collecting microphone 28, and the like are used to determine whether or not a conversation with a nearby partner has occurred, whether or not the conversation has been excited, and the like. Specifically, the presence / absence of body movement is determined by the gyro sensor 26 and the acceleration sensor 27, and the presence / absence of conversation and the volume of conversation are determined by the sound collecting microphone 28. In the case where the user terminal 20 is a watch-type wearable terminal, it is highly effective because the gesture motion gesture can be easily detected by the gyro sensor 26 and the acceleration sensor 27.

  In this way, when registered users come close to each other, it is determined whether or not a conversation has occurred, whether or not the conversation has been excited, and the like, and this is used as a material for deriving the degree of relationship. It will be possible to introduce highly.

[Fourth Embodiment]
In the first embodiment, it is determined whether or not to introduce in a one-to-one relationship between registered users. However, the relationship between registered users may be evaluated based on the concept of a group.

  When registered users are close to each other, the proximity history information generation unit 12 determines that registered users are close to each other and creates a proximity history. When three or more registered users are present, the first implementation In this form, the proximity history is created only in a one-to-one relationship with each registered user. In the present embodiment, in addition to this, when three or more registered users are present, this is also managed as a group proximity history.

  A proximity history by a group of three or more registered users is created, and when the proximity by a group including a predetermined number of the same registered users is performed again, the degree of relationship and reliability are derived, and the degree of relationship and If the reliability satisfies the predetermined condition, the registration of the group is notified to the registered user. When the registered user who has received this notification approves the joining of the group, a friendship is established with the members of the group.

  Creating proximity history information by group in this way is effective because there is a secondary effect that the relationship with the registered user can be remembered by group members.

[Fifth Embodiment]
In the first embodiment, the process of introducing based on the degree of relationship and the reliability has been described. However, the process in the case where the introduced registered user who received the introduction does not register as a friend. Did not mention anything. In this case, since the registered user to be introduced has not seen the friend registration, there is a risk that if the introduction is continued every time it is approached, it may be bothersome. Therefore, the fact that the introduction notification itself was sent is memorized, and when the introduction candidate once sent the introduction notification but was not registered as a friend, there was a close proximity again, the degree of relationship and A high reliability threshold is set. In this way, if you have forgotten your friend registration once, if the relationship between the two parties has deepened due to subsequent proximity, or when the reliability from the third party has increased, It is possible to adopt a configuration for introducing again.

[Sixth Embodiment]
In the first to fifth embodiments, in order to introduce a registered user with guaranteed reliability, generation of proximity history information, derivation of relationship and reliability, introduction of introduction The description is given on the assumption that the process of determination and introduction notification is performed. Upon receiving this process, the registered user selects whether or not to register with the introduced person as a friend. And after friend registration, it is not the structure which utilizes a proximity history. However, the proximity history may be referred to at a desired timing of the registered user such as after friend registration.

  Specifically, when a registered user approaches a registered user who is registered as a friend, there is a need to know where the registered user is in the past. In order to meet this need, when approaching a registered user who is registered as a friend, the user terminal 20 is notified of the proximity to the registered user who is registered as a friend. An item for referring to the proximity history information is provided, and when this item is selected, the proximity history information is sent to the user terminal 20. The registered user who has received the proximity history information can recognize who and where he has met with the registered user who has registered as a friend by referring to the proximity history information. It has the effect of being able to remember. In this way, there is an advantage that the current relationship can be strengthened by reusing the past proximity history. In addition, not only after use as a friend, but also on the notification screen of the introduction before the friend registration, an item for referencing proximity history information is provided, where the meeting was made, and the memory at the time of proximity was dug up. It may be configured to determine whether or not to register a friend.

  Not limited to this, proximity history information with a specific registered user can be referred to at any timing desired by the registered user, so that the memory can be found based on the proximity history information, and the proximity history information is referred to This makes it possible to examine the relationship with the registered user. In other words, by making it possible to confirm a part of the history of actions that have been relied on memory in the past by referring to the proximity history information in the present introduction system, it is possible to assist in the construction of human relationships of registered users.

  In the first embodiment to the sixth embodiment, based on the idea that introduction from the first approach does not ensure reliability, it is extracted as an introduction candidate from at least the second and subsequent approaches. Although described, if reliability is ensured by another method, it may be extracted as an introduction candidate from the first approach. For example, if you are a registered user who has registered your friend with you and you are close to a registered user who you have trusted with a person you trust, you can refer to the registered user that you are close to If it is trusted, it may be determined that the reliability is indirectly secured and extracted as an introduction candidate. In this case, it is necessary to employ a parameter indicating how much trust the registered user has registered as a friend, and a determination is made based on this parameter. The parameter may be such that an individual sets a numerical value, or may be a parameter that increases in accordance with the number of times of proximity, the importance of the proximity location, and the like. By configuring in this way, it is possible to perform introduction with a guaranteed reliability from the first approach.

  In the first to sixth embodiments, position information acquisition using beacon technology has been described as a specific configuration of the position information acquisition means. However, the present invention is not limited to this. It may be position information acquisition using sound waves. Specifically, for example, an ultrasonic communication function (not shown) having at least a reception function is provided in the user terminal 20, and the terminal ID and the transmission time of the transmission apparatus are transmitted by the transmission of an ultrasonic signal from the ultrasonic transmission apparatus. And the distance from the transmission device to the user terminal 20 may be calculated by a method using the sound wave arrival delay time when the reception side receives the ultrasonic wave and replacing it with the distance.

  In the first to sixth embodiments, the proximity history information is used and the action history information is not used. However, the degree of relationship and the reliability are derived using the action history information. May be performed.

  For example, the action is not performed at the same timing as the referral candidate user, so it does not remain in the proximity history, but if you refer to both action histories, there may be many actions in common such as staying in the same place. It is done. When the same type of behavior is performed when referring to the behavior history as well as the proximity history, the same type of stay location may be evaluated so that the degree of relationship is increased by weighting. Good.

  In addition, as an example of deriving the reliability by referring to the action history of the introduction candidate user, the registered user to be introduced registers that he / she likes a sporting game, in particular, a baseball baseball team as his / her profile In addition, in the situation where gambling is disliked, if the referral candidate's action history is referred to and the referral candidate user frequently visits the same baseball team game, it is trusted. Based on the action history of the introduction candidate user, such as deriving a high degree of reliability and deriving a low degree of reliability when the introduction candidate user goes to a place related to gambling such as a racetrack, a racetrack, and a pachinko parlor. Thus, the reliability may be derived. In addition to the evaluation of behavior history based on comparison with the profile, it is also possible to derive the reliability by evaluating the behavior history of the introduction candidate user according to the place of stay as a general reliability evaluation. .

  INDUSTRIAL APPLICABILITY The present invention is useful for business development by building a human relationship using action history (including proximity history) of registered users and using action history information.

DESCRIPTION OF SYMBOLS 100 Introduction system 10 Server 11 Position information acquisition part 12 Proximity history information generation part 13 Introduction candidate extraction part 14 Relation degree derivation part 15 Reliability derivation part 16 Introduction determination part 17 Notification part 18 Control part 19 Storage part 19a Registered user information 19b Position Information 19c Proximity history information 19d Weighting information 20, 20a to 20n User terminal 21 Communication unit 22 Control unit 23 Storage unit 24 Input / output unit 25 GPS
26 Gyro sensor 27 Acceleration sensor 28 Sound collecting microphone 29 Short-range wireless communication function 30, 30 a to 30 n Beacon 31 Communication unit 32 Control unit 33 Storage unit 40 Communication network

Claims (7)

A server that can communicate with a user terminal of each of a plurality of registered users via a communication network,
Position information acquisition means for acquiring position information of the user terminal for each registered user;
Proximity state determination means for determining that the registered users are close to each other based on the distance between the registered users based on the acquired position information;
Proximity history information generating means for generating proximity history information in which information of other registered users in proximity is recorded for each registered user;
Introduction candidate extraction means for extracting the registered user as an introduction candidate user when the number of times of proximity with a specific registered user reaches a predetermined number of times;
A degree-of-relation means for deriving a degree of relation indicating the degree of relation with the introduction candidate user based on the proximity history information;
Reliability deriving means for deriving the reliability of the introduction based on the relationship between the introduction candidate user and the third party;
Introduction determination means for determining whether the degree of relation and / or the reliability satisfies a predetermined condition;
And a notification means for notifying a user terminal of a registered user to be introduced as an introduction target user of an introduction candidate user who satisfies the introduction condition in the introduction determination means. The position information acquisition means transmits a signal for identifying a beacon based on a radio wave received by the user terminal and a reception intensity of the radio wave from the user terminal to a server among a plurality of beacons that transmit radio waves for short-range wireless communication installed in advance. 2. The server according to claim 1, wherein the server acquires location information of the user terminal specified from the reception intensity of radio waves of a plurality of beacons.   The server according to claim 1, wherein the proximity history information generation unit records information on a proximity date and time, a proximity time, and a close location when registered users approach each other.   The proximity history information generating means also records weighting information according to the importance of the place close to other registered users, and uses this weighting information for deriving the degree of relation in the relation degree deriving means. The server according to claim 3, wherein   The degree-of-relation means quantifies the data representing the number of times of proximity between the introduction candidate user and the introduction target user, proximity location, proximity time, and other relationships, and calculates the degree of relationship between the two based on the quantified value. The server according to claim 4, wherein the server is derived. An introduction program for realizing a server that can communicate with a user terminal of each of a plurality of registered users via a communication network,
Position information acquisition means for acquiring position information of the user terminal for each registered user;
Proximity state determination means for determining that the registered users are close to each other based on the distance between the registered users based on the acquired position information;
Proximity history information generating means for generating proximity history information in which information of other registered users in proximity is recorded for each registered user;
Introduction candidate extraction means for extracting the registered user as an introduction candidate user when the number of times of proximity with a specific registered user reaches a predetermined number of times;
A degree-of-relation means for deriving a degree of relation indicating the degree of relation with the introduction candidate user based on the proximity history information;
Reliability deriving means for deriving the reliability of the introduction based on the relationship between the introduction candidate user and the third party;
Introduction determination means for determining whether the degree of relation and / or the reliability satisfies a predetermined condition;
An introduction program that realizes notification means for notifying a user terminal of a registered user to be introduced as an introduction target user who is an introduction candidate who satisfies the introduction condition in the introduction determination means. An introduction method using a server that can communicate with a user terminal of each of a plurality of registered users via a communication network,
A location information acquisition procedure for acquiring location information of the user terminal for each registered user;
A proximity state determination procedure for determining that the registered users are close to each other based on the distance between the registered users based on the acquired position information;
Proximity history information generation procedure for generating proximity history information that records information of other registered users in proximity for each registered user;
An introduction candidate extraction procedure for extracting the registered user as an introduction candidate user when the number of times of proximity with a specific registered user reaches a predetermined number of times;
A degree-of-relationship derivation procedure for deriving a degree of relation indicating the degree of relation with the introduction candidate user based on the proximity history information;
A reliability derivation procedure for deriving the reliability of the introduction based on the relationship between the introduction candidate user and the third party;
An introduction determination procedure for determining whether the relationship and / or the reliability satisfies a predetermined condition;
An introduction method comprising: performing a notification procedure for notifying a user terminal of a registered user to be introduced as an introduction target user of an introduction candidate user who satisfies the introduction condition in the introduction determination unit.

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