JP7324481B2 - Business card exchange system, application program, business card exchange method - Google Patents

Description

The present invention relates to a business card exchange system for exchanging and managing business card information on a network.

When meeting a person for the first time at work or the like, it is customary to exchange paper business cards with the other person to obtain information such as name and contact information. It has been proposed to replace business card exchange using paper media with a business card exchange system on a network in which business card information is displayed on a device such as a smartphone owned by each user.

Patent Literature 1 describes the following business card management system. Assume that Mr. A and Mr. B, who are users of the business card management system, exchange paper business cards. After receiving Mr. B's paper business card, Mr. A converts Mr. B's business card into image data using the camera function of a smartphone or the like, and transmits the image data to the business card management system via the network. In the business card management system, text data is converted from the character portion of the image data, and the image data and the text data are stored and registered as Mr. B's business card data. Then, the business card management system notifies Mr. B that Mr. A has registered Mr. B's business card data.

Patent Literature 2 describes a business card information providing system composed of a server and a user terminal. In the business card information providing system of Patent Document 2, it is described that business card information is stored in each user terminal and business card information is exchanged by mutual communication by short-range wireless communication. Further, it is described that a plurality of business card information with different degrees of confidentiality are stored, and the business card information is selectively used according to the partner.

JP 2015-72659 A Patent No. 6415014

However, the conventional business card exchange system can know only the business card information of the person with whom the business card information was directly exchanged, and there has been a demand for a system that can further expand personal connections.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a business card exchange system capable of expanding personal connections.

The present invention includes a management device for storing and managing business card information of each user, and a terminal device possessed by each user, connected to the management device via a communication network, and displaying the business card information of the user. In a business card exchange system, a management device includes business card information of each user, tree information, where the tree information is information indicating the state of connection between users chained in a tree by business card exchange, and each user's business card information. A storage unit for storing user's disclosure restriction information, where the disclosure restriction information is information on whether or not to disclose business card information to a user who has indirectly exchanged business cards, and business card information to be displayed on a terminal device. and a control unit for controlling, and the disclosure restriction information has information as to which item among the items of the business card information is to be disclosed when the business card information is disclosed to the user who has indirectly exchanged the business card. The control unit controls whether or not to display other users' business card information on the first user's terminal device . For a third user who has controlled information to be displayed on the terminal device and has indirectly exchanged business cards with the first user, if the third user's disclosure restriction information is set to non-disclosure, the third user When the user's business card information is controlled not to be displayed on the first user's terminal device, and the disclosure restriction information of the third user is set to disclosure, the tree information is referred to, and the first user's Detects the fourth user who is a user on the route from the first user to the third user in the tree whose top is , the third user's business card information is controlled so as not to be displayed on the first user's terminal device, and when all the disclosure restriction information of the fourth user is set to disclosure, the third user's business card information is displayed as the first When control is performed so that it can be displayed on the terminal device of the first user, and control is performed so that the business card information of the third user can be displayed on the terminal device of the first user, among the disclosure items of the business card information of the third user, the fourth user's This business card exchange system is characterized by controlling so that only items overlapping with disclosure items of business card information can be displayed . It is assumed that the fourth user also includes the second user.

In the present invention, the disclosure restriction information has information as to which of the items of the business card information should be disclosed when the business card information is disclosed to the user who has indirectly exchanged the business card. When controlling the business card information of the third user so that it can be displayed on the terminal device of the first user, among the disclosure items of the business card information of the third user, only the items that overlap with the disclosure items of the business card information of the fourth user, You may control so that it can be displayed.

Further, the present invention is an application program that is installed in the management device in the business card exchange system of the present invention and causes the control section to function.

Further, the present invention is an application program that is installed in a terminal device in the business card exchange system of the present invention and that controls display of business card information based on control by a control unit.

A business card exchange method for storing and managing business card information of each user by a management apparatus having a storage section and a control section , and displaying the business card information of the user on a terminal device possessed by each user, wherein the storage section Business card information of the user, tree information, where the tree information is information indicating the state of connection between users chained in a tree by exchanging business cards, and disclosure restriction information of each user, where disclosure restriction information is and information on whether or not to disclose the business card information to the user who has indirectly exchanged the business card. It has information on which item among the items of the business card information is to be disclosed, and the control unit controls whether or not to display the business card information of the other user on the terminal device of the first user. For the second user who has directly exchanged business cards, control is performed so that the business card information of the second user can be displayed on the terminal device, and for the third user who has indirectly exchanged business cards with the first user, the third user's own business card information is controlled. When the disclosure restriction information is set to non-disclosure, the third user's business card information is controlled not to be displayed on the first user's terminal device, and the third user's own disclosure restriction information is set to disclosure. If so, the tree information is referenced to detect the fourth user who is a user on the route from the first user to the third user in the tree with the first user at the top, and among the fourth users, When the disclosure restriction information of at least one person is set to be non-disclosure, the third user's business card information is controlled not to be displayed on the first user's terminal device, and all the disclosure restriction information of the fourth user is disclosed. , the third user's business card information is controlled to be displayed on the first user's terminal device , and the third user's business card information is controlled to be displayed on the first user's terminal device (2) controlling so as to display only the items of the third user's business card information that overlap with the disclosure items of the fourth user's business card information;

According to the present invention, not only the business card information of the person with whom the business card has been directly exchanged, but also the business card information of the person with whom the business card has been indirectly exchanged can be obtained depending on the conditions, making it possible to further expand personal connections.

1 is a diagram showing the configuration of a business card exchange system according to a first embodiment; FIG. The figure which showed an example of the input screen of business card information. 4 is a flow chart showing a method of determining whether access to business card information of a user who has indirectly exchanged business cards is permitted. FIG. 10 is a diagram showing a tree-like chain of business card exchanges with user A at the top; FIG. 10 is a diagram showing a specific example of whether or not access to business card information of a user who has indirectly exchanged business cards is possible; The figure which showed an example of the output screen of business card information.

Specific examples of the present invention will be described below with reference to the drawings, but the present invention is not limited to the examples.

FIG. 1 is a diagram showing the configuration of the business card exchange system according to the first embodiment. As shown in FIG. 1, the business card exchange system of the first embodiment includes a management device 1 and a terminal device 2 owned by each user. The terminal device 2 is a smart phone, a tablet, a PC, or the like. The management device 1 and the terminal device 2 are connected to each other via a communication network 3 such as the Internet or a mobile phone communication network.

The management device 1 is a server that can communicate with the terminal device 2 via the communication network 3 . The management device 1 has a storage unit 10 , a control unit 11 and a communication unit 12 .

The storage unit 10 stores various types of information necessary for the business card exchange system of the first embodiment to function, such as each user's business card information, tree information, and each user's disclosure restriction information. The business card information includes the user's ID, name, company name, department name, job title, company address, telephone number, FAX number, email address, company website URL, ownership qualification, company logo image, and user image. , and other information. The tree information is information indicating the state of connections between users linked in a tree by exchanging business cards. Disclosure restriction information includes information on whether to disclose business card information to users who have indirectly exchanged business cards, and information on disclosure items on which items of each business card information to disclose when business card information is disclosed. It is information that includes

The control unit 11 performs various types of management and control that make the business card exchange system of the first embodiment function. Details of the disclosure restriction information and the operation of the control unit 11 will be described later.

The communication unit 12 is a device for communicating with the terminal device 2 via the communication network 3 .

The terminal device 2 has a display section 20 , an input section 21 , a control section 22 and a communication section 23 , and is a device capable of communicating with the management device 1 via the communication network 3 .

The display unit 20 is a device for displaying business card information of users who have exchanged business cards. The input unit 21 is a device for a user to input business card information and read a two-dimensional bar code. For example, the display unit 20 is a touch panel display, and the input unit 21 is a touch panel display and a camera.

The control unit 22 performs various types of management and control for making the business card exchange system of the first embodiment function.

The communication unit 23 is a device for communicating with the management device 1 via the communication network 3 . It is also a device for performing short-range wireless communication such as Bluetooth (registered trademark) between the terminal devices 2 .

The control unit 11 of the management device 1 and the control unit 22 of the terminal device 2 are realized by application programs installed respectively.

Next, the operation of the business card exchange system of the first embodiment will be described.

First, a procedure for a user to start using the business card exchange system of the first embodiment will be described. A user who wants to use the business card exchange system of the first embodiment installs an application program for realizing the business card exchange system in his terminal device 2 . By activating the application program, the control unit 22 of the terminal device 2 is caused to function.

The control unit 22 displays a business card information input screen on the display unit 20 . FIG. 2 is an example of the input screen. The user inputs and registers various business card information according to the input screen. For example, enter your company name, company address, name, phone number, email address, and so on. It should be noted that it is not necessary to register all the business card information, and it is possible to input only a part of the business card information. Also, the name, company name, etc. may be required items for registration. In addition to business card information, various personal information may be registered. For example, the user's age, gender, personal email address, user's address, hobbies, social network addresses, and so on.

Further, the control unit 22 displays an input screen for selecting disclosure restriction information. In FIG. 2, the user who has indirectly exchanged business cards can select whether or not to disclose the business card information by checking two check boxes, ie, whether to disclose or not, at the bottom of the input screen. Then, the user selects whether or not to disclose the information, inputs the information, and registers the information. In the example of FIG. 2, Disclosure is selected. If the user has also registered personal information, he/she also selects whether or not to disclose the personal information and registers it.

Further, when the user has selected to disclose the business card information, the control unit 22 performs display for selecting which item of various business card information is to be disclosed. In FIG. 2, the check boxes on the left side of various business card information are displayed. Then, the user selects, inputs, and registers disclosure items. In the example of FIG. 2, the items to be disclosed are the company name, the phonetic name of the company name, the telephone number, the company address, the company URL, and the holding qualifications. Even when the user has selected disclosure of personal information, the user similarly selects and inputs which item of personal information is to be disclosed.

The control unit 22 generates a user ID and controls the communication unit 23 to transmit the user ID, business card information, and disclosure restriction information to the management device 1 . The user ID may be arbitrarily input by the user, or may be the terminal identification number of the terminal device 2 . The communication unit 23 then transmits the user ID, business card information, and disclosure restriction information to the management device 1 .

When the communication unit 12 of the management device 1 receives the user ID, the business card information, and the disclosure restriction information, the storage unit 10 stores the received user ID, the user's business card information, and the disclosure restriction information. Thus, the procedure for the user to use the business card exchange system of the first embodiment is completed.

Next, a case where a certain user A exchanges business cards with another user B will be described. Two users A and B who exchange business cards start an application program for implementing the business card exchange system of the first embodiment in their respective terminal devices 2 . The control unit 22 displays a selection screen for the business card exchange mode on the display unit 20, and the users A and B select the business card exchange mode.

When the business card exchange mode is selected by the operation of the input unit 21 of users A and B, the control unit 22 of the terminal device 2 of user A displays the two-dimensional barcode including the user ID of user A on the display unit 20. , the control unit 22 of the terminal device 2 of the user B displays the two-dimensional barcode including the user ID of the user B. FIG. Users A and B use the cameras of the input unit 21 to read each other's two-dimensional barcodes. Thus, user A obtains user B's user ID, and user B obtains user A's user ID. After acquiring the user ID of the other user, the control unit 22 controls the display unit 20 to display that the business card exchange is completed, and the display unit 20 displays that the business card exchange is completed. Also, the control unit 22 controls the communication unit 23 to transmit the user ID of the user B to the management device 1 . The communication unit 23 transmits the acquired user ID to the management device 1 .

Acquisition of the user ID of the person exchanging business cards is not limited to the method using the two-dimensional bar code as described above, and may be acquired by any other means. For example, short-range wireless communication such as Bluetooth (registered trademark) may be used to acquire the user ID of the business card exchange partner.

When the communication unit 12 of the management device 1 receives the user ID of the user B who is the business card exchange partner, the storage unit 10 stores that the user A can access the business card information of the user B. FIG. Further, the control unit 11 newly adds the exchange relationship between the user A and the user B to the tree information stored in the storage unit 10 to generate new tree information. Then, the storage unit 10 stores the updated tree information.

Here, the business card information of user B may be displayed on the display unit 20 of the terminal device 2 of user A after the business card exchange with user B is established. That is, it may be operated as follows. The control unit 11 extracts the business card information of the user B stored in the storage unit 10 and transmits the business card information of the user B to the terminal device 2 of the user A via the communication unit 12 . Upon receiving the business card information of user B via the communication unit 23 , the control unit 22 of the terminal device 2 of the user A controls to output the business card information of the user B to the display unit 20 . Then, the display unit 20 displays the business card information of the user B. FIG.

FIG. 6 is a diagram showing an example of business card information of user B displayed on the touch panel display (the display unit 20 and the input unit 21) of the terminal device 2. As shown in FIG. As shown in FIG. 6, user B's name, company name, department name, company address, company telephone number, FAX, e-mail address, qualifications, company logo image, user B's face image, etc. are printed on a paper business card. It is displayed in a layout that is often seen in the case of Also, icons for starting application programs such as memo pad and SNS are displayed, and setting is made so that the corresponding application programs are started by touching these icons. Further, when a company name or logo image of the company is touched, the browser is activated and the company's WEB site is accessed. Also, when the company address is touched, the map application program is set to start. Also, when a phone number is touched, a call is made to that phone number, and when a mail address is touched, a mailer is activated. As described above, the business card in the business card exchange system of the first embodiment is not a paper medium but a digital medium, so that convenience can be easily enhanced by interlocking with various application programs.

In the first embodiment, user B, who has directly exchanged business cards with user A, can access all of user B's business card information. If disclosure is permitted, the accessible range for user A may be adjusted accordingly.

Next, the control unit 11 refers to the tree information stored in the storage unit and determines whether or not there is a user C who has indirectly exchanged business cards with the user A through the user B. In other words, user C is a user (lower user) on the side opposite to user A when viewed from user B in a tree-shaped chain of business card exchanges with user A at the top. FIG. 4 is a diagram showing an example of a tree-like chain of business card exchanges with the user A at the top. In the example of FIG. 4, the exchange relationships are indicated by arrows, and are formed by directly exchanging business cards between users A and B, directly exchanging business cards between users B and D, and directly exchanging business cards between users D and C. There is a chain of business card exchanges, and due to this chain, users A and C indirectly exchange business cards through users B and D.

If the user C exists, it is determined whether or not the business card information of the user C is accessible. The determination is made based on the tree information stored in the storage unit 10 and disclosure restriction information of each user. The details will be described with reference to the flow chart of FIG.

First, the control unit 11 refers to the disclosure restriction information of the user C stored in the storage unit 10, and determines whether the disclosure restriction information of the user C is disclosure or non-disclosure (step S1 in FIG. 3). ).

When the user C's disclosure restriction information is set to non-disclosure, the control unit 11 determines that the user A cannot access the user C's business card information (step S2 in FIG. 3). The storage unit 10 stores the fact that access is prohibited.

When the user C's disclosure restriction information is set to disclosure, the control unit 11 sees a tree-shaped chain of business card exchanges with user A at the top from the tree information stored in the storage unit 10. Then, a route from user A to user C is detected (step S3 in FIG. 3). Here, if there is a user between user B and user C, let user D be that user. There may be multiple users D.

Next, the control unit 11 refers to disclosure restriction information of users B and D on a certain route, and determines whether the disclosure restriction information for that route is disclosure or non-disclosure (step S4 in FIG. 3). . If the disclosure restriction information of at least one of the users B and D is set to non-disclosure, it is determined to be non-disclosure. (if any) is determined to be disclosed. The above determination is performed for each route, and if at least one route is determined to be disclosed, the entire route is determined to be disclosed, and if all routes are determined to be non-disclosed, the entire route is determined to be non-disclosed.

If it is determined in step S4 that the upper disclosure restriction information is not to be disclosed, the control section 11 determines that user A cannot access the business card information of user C (step S5 in FIG. 3). The storage unit 10 stores the fact that access is prohibited.

When the higher-level disclosure restriction information is determined to be disclosed, the control unit 11 determines that the disclosure items of user C overlap with the disclosure items of users B and D on the route determined to be disclosed. It is determined that user A can access the business card information of user C only for items where the user A has access to the business card information (step S6 in FIG. 3). It should be noted that the disclosed items of user C may simply be accessible instead of duplicate items. Then, the storage unit 10 stores information indicating that access is permitted and disclosure items for which access is permitted.

For example, in the example of FIG. 4, user B's disclosure items are name, company name, company phone number, company address, and company logo image, and user C's disclosure items are name, company name, company phone number, If User D's disclosure items are company name, company telephone number, company address, company URL, and ownership qualifications, user A sends user C's company name and company telephone number. , company address, will be accessible.

In addition, when there is no item that overlaps with the disclosure items of users B and D among the disclosure items of user C, it may be possible to set a state in which user C can access but there are no disclosure items. , user C may be determined to be inaccessible.

As described above, all the users C who have indirectly exchanged business cards with the user A are judged to be accessible or not, and stored in the storage unit 10 .

If there is an accessible user C, the control unit 11 notifies the terminal device 2 via the communication unit 12 . When the control unit 22 of the terminal device 2 receives the notification via the communication unit 23 , it controls the display unit 20 to display the presence of the user C. FIG. Then, the display unit 20 displays that the business card information of the user C can be accessed through the user B. FIG.

A more specific description will be given of whether or not access to the business card information of a user who has indirectly exchanged business cards is possible. FIG. 5 is a diagram showing a tree-like business card exchange chain of users A to J with user A at the top. In FIG. 5, users whose disclosure restriction information is set to disclosure and all items are set to disclosure are blacked out, and users whose items are partially set to disclosure are shaded and set to non-disclosure. Users are shown in white.

In the case of FIG. 5, user B is exchanging business cards with user A directly. Therefore, user A can access all items of user B's business card information.

For user C, user C's own disclosure restriction information is partially disclosed, and user B's disclosure restriction information on the route from user A to user C is set to be fully disclosed. Therefore, user A can access part of user C's business card information. The part is the item that the user C has set to be disclosed.

For user D, all of user D's own disclosure restriction information is set to disclosure, and all of user B's disclosure restriction information on the route from user A to user D is set to disclosure. Therefore, user A can access all of user C's business card information.

As for user E, disclosure restriction information of user E is set to non-disclosure. Therefore, user A cannot access user E's business card information.

As for user F, all of the user F's own disclosure restriction information is set to disclosure, and all of the disclosure restriction information of users B and D on the route from user A to user F is set to disclosure. Therefore, user A can access all of user F's business card information.

As for user G, all disclosure restriction information of user G is set to disclosure, and two routes from user A to user G exist. Of the two routes, for the route via users B and E, the disclosure restriction information for user E is set to non-disclosure, so the disclosure restriction information for that route is determined to be non-disclosure. On the other hand, on the route via users B and D, all of the restricted disclosure information of users B and D is set to be disclosed, so all of the restricted disclosure information of that route is determined to be disclosed. As a result, as a whole, it is determined that all documents are disclosed. Therefore, user A can access all of user G's business card information.

Regarding user H, the disclosure restriction information of user H is set to be partially disclosed, but among users B and E on the route from user A to user H, user E's disclosure restriction information is fully disclosed. , is set to non-disclosure. Therefore, user A cannot access user H's business card information.

Regarding user I, the disclosure restriction information of user I is set to partial disclosure, and the disclosure restriction information of users B and C on the route from user A to user I is set to full disclosure and partial disclosure, respectively. there is Therefore, user A can access a portion of user I's business card information. Some of the items disclosed by user I are items that are duplicated by both users B and C, and user B is fully disclosed. These items are duplicated items.

Regarding user J, the disclosure restriction information of user J is set to full disclosure, and the disclosure restriction information of users B and C on the route from user A to user J is set to full disclosure and partial disclosure, respectively. . Therefore, user A can access part of user J's business card information. Some of them are items that overlap with both users B and C among user J's disclosure items, and since users B and J are all disclosed, they are user C's disclosure items after all. .

Next, the operation for displaying the business card information of another user on the terminal device 2 of user A will be described.

When the control unit 22 displays a business card information display mode selection screen on the display unit 20 and the user A selects the business card information display mode by operating the input unit 21, the control unit 22 allows access via the communication unit 23. to the management device 1 for a list of users of The control unit 11 of the management device 1 that has received the request via the communication unit 12 lists users based on the information on whether or not the user A can access other users stored in the storage unit 10 . Then, the control unit 11 transmits the user list to the user A's terminal device 2 via the communication unit 12 . The control unit 22 of the terminal device 2 that has received the user list via the communication unit 23 controls the display unit 20 to display the user list.

When a predetermined user is selected from among the users displayed on the display unit 20 by user A's operation on the input unit 21, the control unit 22 manages the information of the selected user via the communication unit 23. Send to device 1. The control unit 11 of the management device 1 that has received the information on the selected user via the communication unit 12 refers to the information on whether or not access is permitted for the selected user stored in the storage unit 10, and determines whether the selected user Accessible disclosure items are extracted from the business card information. Then, the control unit 11 transmits the extracted business card information to the terminal device of the user A via the communication unit 12 .

The control unit 22 receives the business card information of the selected user via the communication unit 23 and controls the display unit 20 to display the business card information. Then, the display unit 20 displays disclosure items of the business card information of the selected user.

Next, a case where user A updates his own business card information will be described. When the control unit 22 displays a business card information update mode selection screen on the display unit 20 and the user A selects the business card information update mode by operating the input unit 21, the control unit 22 displays the business card information update screen on the display unit 20. display. User A inputs and updates various business card information according to the update screen, and registers the information. Also, the disclosure restriction information may be updated. In other words, the selection of whether or not to disclose the business card information to the user who has indirectly exchanged the business card information, and the selection of the items to be disclosed when disclosed, may be updated. When the business card information of user A is updated, the control unit 22 transmits the updated information to the management device 1 via the communication unit 23 .

When the management device 1 receives the update information of the business card information of the user A via the communication unit 12, the storage unit 10 updates and stores the business card information of the user A. FIG. Then, the control unit 11 generates information indicating that the business card information of user A has been updated, and transmits the information to the terminal devices 2 of all users who directly or indirectly exchange business cards with user A. 12.

When the control unit 22 of the terminal device 2 of the user who directly or indirectly exchanges business cards with the user A receives the information indicating that the business card information of the user A has been updated via the communication unit 23, the display unit 20 to display that the business card information of user A has been updated, and the display unit 20 displays that effect. As described above, in the business card exchange system of the first embodiment, users can update business card information at any time, and other users can access the latest business card information without exchanging business cards again.

As described above, according to the business card exchange system of the first embodiment, not only the business card information of the user who directly exchanged the business card but also the business card information of the user who indirectly exchanged the business card can be obtained depending on the conditions. Therefore, it is possible to expand personal connections more than the conventional exchange of business cards.

In the first embodiment, whether or not user C's business card information can be disclosed to user A is not affected by user A's disclosure restriction information, but it may be affected. For example, even if it is determined that user C's business card information can be accessed according to the flowchart in FIG. The business card information of user C may be set to non-disclosure. In addition, when user A's disclosure restriction information is set to disclosure, user C's business card information is disclosed to user A in the range where user A's disclosure items and user C's disclosure items overlap. can be set as

Further, in the first embodiment, access to the business card information is restricted as long as the user C is determined to be accessible according to the flow chart of FIG. No, but you can limit it. For example, if there are three or more users on the route from user A to user C, access to the business card information of user C may be disabled regardless of the flow chart of FIG.

The business card exchange system of the present invention can be used as a system to replace the conventional paper medium business card exchange.

1: Management Device 2: Terminal Device 3: Communication Network 10: Storage Unit 11, 22: Control Unit 12, 23: Communication Unit 20: Display Unit 21: Input Unit

Claims (4)

A business card exchange system comprising: a management device for storing and managing business card information of each user; and a terminal device owned by each user, connected to the management device via a communication network, and displaying the business card information of the user. and
The management device includes business card information of each user, tree information, where the tree information is information indicating the state of connection between users chained in a tree by exchanging business cards, disclosure restriction information of each user, Here, the disclosure restriction information includes a storage unit that stores information as to whether or not to disclose business card information to users who have indirectly exchanged business cards, and a control unit that controls the business card information to be displayed on the terminal device. , has
The disclosure restriction information has information as to which of the items of the business card information is to be disclosed when the business card information is disclosed to the user who has indirectly exchanged the business card,
The control unit controls whether or not to display other user's business card information on the terminal device of the first user,
For a second user who has directly exchanged business cards with the first user, control is performed so that business card information of the second user can be displayed on the terminal device,
For the third user who has indirectly exchanged business cards with the first user,
controlling the business card information of the third user not to be displayed on the terminal device of the first user when the disclosure restriction information of the third user is set to non-disclosure;
When the disclosure restriction information of the third user is set to disclosure, the tree information is referred to, and the first user to the third user in the tree with the first user at the top A fourth user who is a user on the route is detected, and when the disclosure restriction information of at least one of the fourth users is set to non-disclosure, the third user's business card information is transferred to the first user's business card information. control not to display it on the terminal device, and when all the disclosure restriction information of the fourth user is set to disclosure, the business card information of the third user is displayed on the terminal device of the first user; control visible ,
When the business card information of the third user is controlled to be displayed on the terminal device of the first user, among the business card information disclosure items of the third user, the business card information disclosure items of the business card information of the fourth user overlap. to control visibility only for items,
A business card exchange system characterized by: 2. An application program which is installed in the management device in the business card exchange system according to claim 1 and causes the control section to function. 2. An application program installed in the terminal device in the business card exchange system according to claim 1, for controlling display of business card information based on control by the control unit. A business card exchange method for storing and managing business card information of each user by a management device having a storage unit and a control unit , and displaying the business card information of the user on a terminal device owned by each user,
The storage unit stores business card information of each user, tree information, where the tree information is information indicating the state of connection between users chained in a tree by exchanging business cards, disclosure restriction information of each user, Here, the disclosure restriction information stores information as to whether or not to disclose the business card information to the user who has indirectly exchanged the business card,
The disclosure restriction information has information as to which of the items of the business card information is to be disclosed when the business card information is disclosed to the user who has indirectly exchanged the business card,
The control unit controls whether or not to display other user's business card information on the terminal device of the first user,
For a second user who has directly exchanged business cards with the first user, control is performed so that business card information of the second user can be displayed on the terminal device,
For the third user who has indirectly exchanged business cards with the first user,
controlling the business card information of the third user not to be displayed on the terminal device of the first user when the disclosure restriction information of the third user is set to non-disclosure;
When the disclosure restriction information of the third user is set to disclosure, the tree information is referred to, and the first user to the third user in the tree with the first user at the top A fourth user who is a user on the route is detected, and when the disclosure restriction information of at least one of the fourth users is set to non-disclosure, the third user's business card information is transferred to the first user's business card information. control not to display it on the terminal device, and when all the disclosure restriction information of the fourth user is set to disclosure, the business card information of the third user is displayed on the terminal device of the first user; control visible ,
When the business card information of the third user is controlled to be displayed on the terminal device of the first user, among the business card information disclosure items of the third user, the business card information disclosure items of the business card information of the fourth user overlap. to control visibility only for items,
A business card exchange method characterized by:

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