JP2021197610A - Notification system, notification method and computer program - Google Patents

Abstract

To more accurately determine the possibility of problems with individual identification.SOLUTION: A notification system includes a storage unit for storing the individual identification information shown in the individual identification document which is used for individual identification of an identification target and the telephone number of the identification target in association with each other and a control unit for making a notification to a predetermined notification destination when a predetermined caution condition is satisfied with respect to the individual identification information or the telephone number.SELECTED DRAWING: Figure 1

Description

The present invention relates to a technique for more effectively performing identity verification.

In recent years, the importance of identity verification has increased in various industries. For example, with the aim of preventing crimes such as money laundering, due to the revision of the Act on Prevention of Transfer of Criminal Proceeds (hereinafter referred to as the "Criminal Proceeds Transfer Prevention Act"), identity verification will begin in April 2nd year of Reiwa. The method will be partially tightened. In response to such a trend, a technique for performing identity verification more accurately has also been proposed (for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2020-038444

However, at present, it is not always possible to make an accurate judgment in all identity verifications. For example, the identity verification presented with false information was treated as no problem, or the identity verification that had no problem at one point was overlooked even if a problem occurred after that.

In view of the above circumstances, an object of the present invention is to provide a technique capable of more accurately determining the possibility of a problem in identity verification.

One aspect of the present invention is a storage unit that stores the personal identification information shown in the personal identification document, which is a document used for personal verification of the confirmation target person, and the telephone number of the confirmation target person in association with each other. It is a notification system including a control unit that notifies a predetermined notification destination when a predetermined caution condition is satisfied with respect to the personal identification information or the telephone number.

One aspect of the present invention is the above-mentioned notification system, and the control unit determines that a predetermined caution condition is satisfied when a change occurs in the information indicating a state with respect to the telephone number.

One aspect of the present invention is the above-mentioned notification system, and the control unit determines that a predetermined caution condition is satisfied when a plurality of different personal identification information exists in association with the same telephone number.

One aspect of the present invention is the above-mentioned notification system, and the control unit determines that a predetermined caution condition is satisfied when a plurality of different telephone numbers are associated with the same personal identification information.

One aspect of the present invention is a storage in which a computer stores personal identification information shown in an identity verification document, which is a document used for identity verification of a confirmation target person, in association with the telephone number of the confirmation target person. It is a notification method including a step of acquiring data from a unit and a step of notifying a predetermined notification destination when a predetermined caution condition is satisfied with respect to the personal identification information or the telephone number.

One aspect of the present invention is a computer program for operating a computer as the above notification system.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to more accurately determine the possibility that a problem may occur in terms of identity verification.

It is a schematic block diagram which shows the system configuration of the notification system 100 of this invention. It is a schematic block diagram which shows the functional structure of the notification device 20. It is a figure which shows the specific example of the information which a telephone number information storage part 241 stores. It is a figure which shows the specific example of the information which the confirmation target person information storage unit 242 stores. It is a figure which shows the specific example of the information which the notification destination information storage unit 243 stores. It is a flowchart which shows the specific example of the process when the confirmation target person information acquisition unit 252 acquires a new confirmer information. It is a flowchart which shows the specific example of the process of caution condition determination part 253.

Hereinafter, a specific configuration example of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic block diagram showing a system configuration of the notification system 100 of the present invention. The notification system 100 includes one or more terminal devices 10 (10_1 to 10_n: n is an integer of 1 or more) and the notification device 20. The terminal device 10 and the notification device 20 communicate with each other via the network 30. The network 30 may be a network using wireless communication or a network using wired communication. The network 30 may be configured by combining a plurality of networks.

The terminal device 10 is an information device used by a specific business operator. The terminal device 10 may be configured by using a device such as a personal computer, a server device, or a dedicated system. The specific business operator may be, for example, a specific business operator under Article 2, Paragraph 2 of the Act on Prevention of Transfer of Criminal Proceeds. Specific businesses are, for example, financial institutions, credit card companies, and dealers of jewelry and precious metals. The specific business operator does not have to be limited to the above-mentioned specific business operator, and any business operator can be any business operator that confirms the identity of a person such as a customer by being presented with predetermined information. good.

Identity verification is a process for confirming that a person such as a customer is truly the same person as the person who claims to be the person. Identity verification may mean, for example, confirmation of personal identification matters prescribed in Article 4, Paragraph 1, Item 1 of the Act on Prevention of Transfer of Criminal Proceeds. For example, identity verification documents are used to confirm identity-identifying matters. An identity verification document is a document in which some or all of the personal identification matters are posted. Identity verification documents are, for example, documents such as a driver's license, residence card, My Number card, passport, health insurance card, and pension notebook. In the identity verification, only one identity verification document may be used, or a plurality of identity verification documents may be used. When performing identity verification, a specific business operator receives the presentation of identity verification documents from the person subject to identity verification, and obtains the identity verification items and identification information of the identity verification documents listed in the identity verification documents. ..

The specific business operator inputs the acquired information to the terminal device 10. By operating the terminal device 10, the specific business operator transmits and registers the acquired information to the notification device 20. When the terminal device 10 determines from the notification device 20 that a predetermined condition (condition indicating a caution) is satisfied with respect to the information used for identity verification, the terminal device 10 receives the determination result from the notification device 20. .. When the terminal device 10 outputs the determination result, the specific business operator can know the determination result. After that, the specific business operator can confirm the identity verification information with the target person according to the determination result.

The notification device 20 is an information device such as a personal computer or a server device. FIG. 2 is a schematic block diagram showing a functional configuration of the notification device 20. The notification device 20 includes a communication unit 21, an input unit 22, an output unit 23, a storage unit 24, and a control unit 25.

The communication unit 21 is configured by using a communication interface. The communication unit 21 communicates data with another device via the network 30.

The input unit 22 is configured by using an existing input device such as a keyboard, a pointing device (mouse, tablet, etc.), a button, and a touch panel. The input unit 22 is operated by the administrator when inputting the instruction of the administrator of the notification device 20 to the notification device 20. The input unit 22 may be an interface for connecting the input device to the notification device 20. In this case, the input unit 22 inputs the input signal generated in response to the input of the administrator in the input device to the notification device 20. The input unit 22 may be configured by using a microphone and a voice recognition device. In this case, the input unit 22 voice-recognizes the wording spoken by the administrator and inputs the character string information of the recognition result to the notification device 20. The input unit 22 may be configured in any way as long as the instructions of the administrator can be input to the notification device 20.

The output unit 23 outputs data to the administrator of the notification device 20 via an output device (not shown) connected to the notification device 20. The output device may be configured by using, for example, a device that outputs an image or characters to the screen. For example, the output device can be configured by using a CRT (Cathode Ray Tube), a liquid crystal display, an organic EL (Electro-Luminescent) display, or the like. Further, the output device may be configured by using a device that converts characters into voice and outputs the characters. In this case, the output device can be configured by using a voice synthesizer and a voice output device (speaker).

The storage unit 24 is configured by using a storage device such as a magnetic hard disk device or a semiconductor storage device. The storage unit 24 functions as a telephone number information storage unit 241, a confirmation target person information storage unit 242, and a notification destination information storage unit 243.

The telephone number information storage unit 241 stores information related to a plurality of telephone numbers. The telephone number information storage unit 241 stores at least the telephone number of the person to be confirmed and information indicating the state of the telephone number (for example, the state information described later and the result of determination in the name of another person) in association with each other. The person to be confirmed is a person who receives identity verification. The person to be confirmed may be, for example, a customer or the like under Article 2, Paragraph 3 of the Act on Prevention of Transfer of Criminal Proceeds.

FIG. 3 is a diagram showing a specific example of information stored in the telephone number information storage unit 241. The telephone number information storage unit 241 stores, for example, a telephone number information table. The telephone number information table has a plurality of telephone number information records. The telephone number information record includes, for example, a telephone number, status information, and a value of another person's name determination result. The telephone number is a telephone number that is valid at least when the telephone number information record is registered and is assumed to be used by a specific person (hereinafter referred to as "assumed user").

The status information represents the usage status of the telephone number at a predetermined timing. The state information may be represented as, for example, one of five states: valid, invalid, transfer, bureaucracy, or suspension. For example, the values of "1" for valid, "2" for invalid, "3" for transfer, "4" for bureau deposit, and "5" for suspension may be retained. Valid means that the target telephone number is used by the subscriber who is the assumed user and is in a state where incoming and outgoing calls can be made. Invalid means that the target phone number is not used and incoming / outgoing calls cannot be made. Relocation means that the assumed user of the target phone number is using another phone number, and the target phone number itself cannot contact the expected user. show. For example, when a call is made to a telephone number whose status is transfer, an announcement (transfer announcement) indicating that the call has been changed to another number is played on the handset of the caller. The bureau deposit indicates that the target telephone number is used by the subscriber who is the assumed user, but the call cannot be made or received. In the case of a station deposit, even if you make a call to a telephone number, the transfer announcement will not be sent to the caller's handset. The suspension of convenience represents a state in which the target telephone number cannot be made or received due to the circumstances of the subscriber. The usage status does not have to be limited to the above five states, and other states may be provided or may be represented by a smaller number of states. The predetermined timing may be, for example, every month, every two months, or any timing.

The result of determining the name of another person indicates whether or not the owner of the telephone number is no longer the assumed user. For example, when the owner of the telephone number is no longer the assumed user, "X" is retained in the other person's name determination result. For example, if the owner of the telephone number remains the assumed user, "Y" is retained in the result of determining the name of another person. The determination of the name of another person will be described later.

The confirmation target person information storage unit 242 stores information about a plurality of confirmation target persons. The confirmation target person information storage unit 242 corresponds at least the identification information used for the confirmation target person's identity verification (hereinafter referred to as "personal identification information") and the telephone number in which the confirmation target person is an assumed user. Attach and memorize.

FIG. 4 is a diagram showing a specific example of the information stored in the confirmation target person information storage unit 242. The confirmation target person information storage unit 242 stores, for example, a confirmation target person information table. The confirmation target person information table has a plurality of confirmation target person information records. The confirmation target person information record has, for example, identification number, business identification information, document information, personal identification information, expiration date, telephone number, and flag values. The identification information is identification information that uniquely indicates the confirmation target person information record. The business operator identification information is identification information indicating a business operator who has confirmed the identity of the person to be confirmed.

The document information is information indicating the identity verification document used when the identity verification was performed for the person to be confirmed. The identity identification information is the identification information shown in the identity verification document used for the identity verification, and is the identification information indicating the person to be confirmed. For example, when the identity verification document is a passport, the identity identification information may be a passport number. For example, when the identity verification document is a residence card, the identity identification information may be a residence card number. The expiration date indicates the expiration date of the identity verification document used for identity verification. The telephone number indicates a telephone number for which the person to be confirmed is an assumed user. The flag indicates whether or not the caution condition is satisfied. For example, when the caution condition is satisfied, "1" is held as the value of the flag. For example, if the caution condition is not satisfied, "0" is held as the value of the flag.

The caution condition is a condition indicating that the confirmation target person corresponding to the confirmation target person information record is a person who needs attention. Specific examples of caution conditions include a condition indicating that the person is the target of confirmation of the duplicated state, a condition indicating an expired state, a condition indicating that a change has occurred in the state of the telephone number, and AML / CFT (Anti-Money). There is a condition (hereinafter referred to as "continuous customer management condition") indicating that the period of continuous customer management determined according to the height of customer risk based on Laundering / Counter Financing of Terrorism is approaching. Hereinafter, specific examples of these caution conditions will be described.

The duplicated state indicates a state in which a plurality of different confirmation target person information records are registered for the same confirmation target person. For example, a state in which a plurality of different personal identification information is registered for the same combination of telephone numbers and document information is an example of a duplicated state. For example, a state in which a plurality of different telephone numbers are registered for the same combination of document information and personal identification information is an example of a duplicated state. The person to be confirmed in such a state may have various points to be noted, such as the possibility of using a disguised identity verification document or telephone number in the identity verification. Such a person to be confirmed is a person who needs attention.

The revoked state is a state in which the identity verification document used for identity verification has expired. The revoked state may be a state in which the remaining period until the expiration date of the identity verification document used for the identity verification is less than a predetermined period (for example, 10 days or 1 month). The person to be confirmed in such a state is a person who needs attention because the validity of the identity verification document used in the identity verification may be lost or may have already been lost.

A change in the state of a telephone number means that the state information of the telephone number is no longer valid. For example, a caution condition may be set on the condition that the state information of the telephone number is invalid, or a caution condition may be set on the condition that the status information of the telephone number is invalid or suspended. Furthermore, it may be set as a caution condition that the telephone number is in the name of another person. That is, for example, if the status information of the telephone number is invalid, it is suspended for convenience, or it is in the name of another person, the caution condition is set as the condition is satisfied. May be good.

The continuous customer management condition is that the period determined by the risk criteria (for example, high, medium, low) set based on AML / CFT for the person to be confirmed is approaching or has already passed from the previous confirmation. It is a condition indicating. For example, a predetermined period of 6 months to 1 year may be set for the confirmed subject having a high risk standard. For example, a predetermined period of 2 to 3 years may be set for the confirmation target person whose risk standard is medium. For example, a predetermined period of 3 to 5 years may be set for the confirmed subject having a low risk standard.

The notification destination information storage unit 243 stores notification destination information for each business operator. The notification destination information storage unit 243 stores at least the business identification information indicating a specific business operator and the information indicating the notification destination used when notifying the business operator in association with each other.

FIG. 5 is a diagram showing a specific example of information stored in the notification destination information storage unit 243. The notification destination information storage unit 243 stores, for example, a notification destination information table. The notification destination information table has a plurality of notification destination information records. The notification destination information record has, for example, the values of the business identification information and the notification destination information. The business operator identification information is business operator identification information indicating a business operator to be notified when a confirmation target person satisfying the caution condition is detected in the notification device 20. The notification destination information is information indicating a destination used when performing notification. The notification destination information indicates, for example, the destination of the notification transmitted to the terminal device 10. More specifically, the notification destination information may be information indicating an e-mail address that can be received by the terminal device 10, or information indicating a destination used in a predetermined protocol for notification (for example, an IP address). Or MAC address or other dedicated destination information).

Returning to FIG. 2, the control unit 25 will be described. The control unit 25 is configured by using a processor such as a CPU (Central Processing Unit) and a memory. The control unit 25 functions as a telephone number information acquisition unit 251, a confirmation target person information acquisition unit 252, a caution condition determination unit 253, and a notification unit 254 by executing a program by the processor. All or part of each function of the control unit 25 may be realized by using hardware such as an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), or an FPGA (Field Programmable Gate Array). The above program may be recorded on a computer-readable recording medium. Computer-readable recording media include, for example, flexible disks, magneto-optical disks, ROMs, CD-ROMs, portable media such as semiconductor storage devices (eg SSD: Solid State Drive), hard disks built into computer systems, and semiconductor storage. It is a storage device such as a device. The above program may be transmitted over a telecommunication line.

The telephone number information acquisition unit 251 acquires status information and another person's name determination result for each telephone number stored in the telephone number information storage unit 241. Any algorithm may be applied between the acquisition of the state information and the acquisition of the judgment result in the name of another person. For example, in the determination of the name of another person, if "invalid" is retained as the state information of the telephone number for a predetermined period of time and then other than invalidity is retained, it may be determined that the information is in the name of another person.

The confirmation target person information acquisition unit 252 acquires information about the confirmation target person from a specific business operator that performs identity verification after the identity verification process and the identity verification process. For example, the confirmation target person information acquisition unit 252 may receive the confirmation target person's information from the terminal device 10 operated by a specific business operator via the network 30. The information acquired by the confirmation target person information acquisition unit 252 is, for example, information stored in the confirmation target person information storage unit 242.

The caution condition determination unit 253 determines whether or not the caution condition is satisfied for the confirmation target person who is the determination target. The information of the confirmation target person to be determined may be, for example, the information of the confirmation target person included in the determination request transmitted from the terminal device 10, or the information stored in the confirmation target person information storage unit 242. May be. For example, when the caution condition determination unit 253 receives the determination request from the terminal device 10, it determines whether or not the caution condition is satisfied for the information included in the received determination request. Then, the caution condition determination unit 253 transmits the determination result to the terminal device 10 which is the transmission source. For example, when the timing for determining the information stored in the confirmation target person information storage unit 242 arrives, the caution condition determination unit 253 determines whether or not the caution condition is satisfied for the information. When the caution condition is satisfied, the caution condition determination unit 253 reads out the notification destination information corresponding to the business operator identification information of the information from the notification destination information storage unit 243. Then, the notification unit 254 is instructed to transmit the determination result to the read notification destination.

The notification unit 254 transmits information to the notification destination in response to the instruction of the caution condition determination unit 253.

FIG. 6 is a flowchart showing a specific example of processing when the confirmation target person information acquisition unit 252 acquires new confirmer information. First, the confirmation target person information acquisition unit 252 acquires the confirmation target person information by receiving the confirmation target person information from the terminal device 10 (step S101). At this time, for example, a request for determining whether or not the attention condition is satisfied for the personal identification information and the telephone number used for personal identification may be received from the terminal device 10. The caution condition determination unit 253 determines whether or not the caution condition is satisfied for the information acquired by the confirmation target person information acquisition unit 252. In particular, in the flowchart of FIG. 6, the caution condition determination unit 253 determines whether or not there is an overlapping state (step S102).

When the received information of the confirmation target person is in the duplicate state (step S103-YES), the notification unit 254 notifies the terminal device 10 which is the transmission source of the confirmation target person's information that the information is in the duplicate state (step S103-YES). Step S104). At this time, the notification unit 254 may be configured not to notify specifically what kind of information is duplicated. With such a configuration, it is possible to appropriately protect personal information and notify that caution conditions (particularly conditions indicating a duplicated state) are satisfied and caution is required. The caution condition determination unit 253 updates the flag of the information in the duplicated state among the information stored in the confirmation target person information storage unit 242 (step S105). At this time, the notification unit 254 uses the information of the confirmation target person (hereinafter referred to as "duplicate information") in the duplicated state for the notification destination corresponding to the business identification information for the information whose flag has been updated. You may notify that there is something (that the caution conditions have been met).

When the received information of the confirmation target person is not in the duplicated state (step S103-NO), the notification unit 254 notifies the terminal device 10 which is the transmission source of the confirmation target person's information that the information is not in the duplicated state (step S106). ). The confirmation target person information acquisition unit 252 registers the received information of the confirmation target person in the confirmation target person information storage unit 242 (step S107).

FIG. 7 is a flowchart showing a specific example of the processing of the caution condition determination unit 253. When a predetermined timing arrives, the caution condition determination unit 253 executes the processing of the flowchart shown in FIG. 7. Hereinafter, the flowchart shown in FIG. 7 will be described.

First, the caution condition determination unit 253 acquires the information to be determined among the information of the confirmation target person stored in the confirmation target person information storage unit 242. The information to be determined may be acquired in order according to, for example, the identification information, or may be determined by a predetermined algorithm. For example, the caution condition determination unit 253 reads the confirmation target person information record to be determined from the confirmation target person information storage unit 242 (step S201). The caution condition determination unit 253 determines whether or not the caution condition is satisfied for the read confirmation target person information (step S202).

When the information of the confirmation target person of the determination target satisfies the caution condition (step S203-YES), the caution condition determination unit 253 records that the caution condition is satisfied for the information of the confirmation target person of the determination target. For example, the caution condition determination unit 253 updates the flag of the confirmation target person information record that is the determination target (step S204). The caution condition determination unit 253 acquires the notification destination information of the business operator who is the acquisition source of the information of the confirmation target person who satisfies the caution condition. The notification unit 254 notifies the business operator of the confirmation target person who meets the caution conditions based on the acquired notification destination information. For example, the notification unit 254 notifies the terminal device 10 of the confirmation target person who satisfies the caution condition as a caution person (step S205).

The caution condition determination unit 253 determines whether or not the determination for all the confirmation target persons, which are the determination targets, has been completed at this timing (step S206). When there is information of the determination target for which the determination has not been made (step S206-NO), the caution condition determination unit 253 executes the processing after step S201 for the information of the determination target for which the determination has not been made. On the other hand, if there is no information to be determined that has not been determined (step S206-YES), the caution condition determination unit 253 ends the process.

According to the notification system 100 configured in this way, it is possible to more accurately determine the possibility that a problem related to identity verification has occurred for a person (verification target person) who is the target of identity verification. .. That is, when a state such as a duplicated state occurs, the credibility of the information that is going to be used for identity verification or the information used in the past identity verification may be low.

In addition, even if no particular problem is found in the information described in the identity verification document, if a change in the status is detected in the telephone number registered in association with the identity identification information, a cautionary condition is required. Is determined to be satisfied. If the state of the telephone number has changed, it is highly possible that the lifestyle of the contractor of the telephone number has changed. By detecting such a state, it is possible to quickly confirm the state to the person to be confirmed.

Also, if the expiration date of the identity verification document used for identity verification has expired, it is determined that the caution conditions have been met. If the expiration date of the identity verification document has expired, it is highly possible that the lifestyle of the person to be verified has changed. By detecting such a state, it is possible to quickly confirm the state to the person to be confirmed.

Further, according to the continuous customer management condition based on AML / CFT, when the period specified according to the risk as the condition approaches or arrives, it is determined that the caution condition is satisfied and a notification is given. By giving such a notification, risk management compliant with AML / CFT becomes possible.

(Modification example)
The notification device 20 may be configured as a notification system using a plurality of information processing devices. For example, the storage unit 24 and the control unit 25 may be mounted in different information processing devices. Further, the telephone number information acquisition unit 251, the confirmation target person information acquisition unit 252, the caution condition determination unit 253, and the notification unit 254, which are the functions of the control unit 25, may be implemented in a plurality of information processing devices. In these cases, each information processing device may be directly connected by a communication cable, may be connected by using a premises network such as a LAN, or may be connected via a wide area network or a public network. good.

In the notification system 100 of the present invention, an IP address may be used instead of the telephone number. In this case, the storage unit 241 functions as an IP address information storage unit instead of the telephone number information storage unit 241. The IP address information storage unit stores the IP address and the state information in association with each other. The status information represents the status of each IP address. The state information may be, for example, information indicating the degree of possibility that each IP address is being used illegally or a specific situation. The confirmation target person information storage unit 242 stores the IP address instead of the telephone number. In this case, as a specific example of the caution condition, it may be a condition that it is detected as an access source of unauthorized access, or it may be a condition that it is registered as a blacklist of IP addresses. For example, it is a caution condition that the IP address detected by the device or system that detects suspicious access overseas, via a proxy, Internet cafe, free WiFi (registered trademark), etc. is registered in the registered list. May be defined.

In the notification system 100 of the present invention, an address may be used instead of the telephone number. In this case, the storage unit 241 functions as an address information storage unit instead of the telephone number information storage unit 241. The address information storage unit stores the address and the status information in association with each other. The status information represents the status of each address. The state information may be, for example, information indicating the degree of possibility that each address is being used illegally or a specific situation. The confirmation target person information storage unit 242 stores the address instead of the telephone number. In this case, as a specific example of the caution condition, it may be a condition that the address is detected as an address registered as a vacancy in the database of vacancy (information such as rental property). As a specific example of the caution condition, it may be a condition that the address is detected as an address registered as a gray address in the database of gray addresses. A gray address is an address that may be inappropriate when applying for a monthly condominium, a weekly condominium, an accommodation facility (for example, a hotel), etc., and is an address registered in a database that collects such addresses.

Although the embodiments of the present invention have been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and includes designs and the like within a range that does not deviate from the gist of the present invention.

100 ... Notification system, 10 ... Terminal device, 20 ... Notification device, 30 ... Network, 21 ... Communication unit, 22 ... Input unit, 23 ... Output unit, 24 ... Storage unit, 241 ... Telephone number information storage unit, 242 ... Confirmation Target person information storage unit, 243 ... Notification destination information storage unit, 25 ... Control unit, 251 ... Telephone number information acquisition unit, 252 ... Confirmation target person information acquisition unit, 253 ... Caution condition judgment unit, 254 ... Notification unit

Claims (6)

A storage unit that stores the personal identification information shown in the personal identification document, which is a document used for personal verification of the confirmation target person, and the telephone number of the confirmation target person in association with each other.
A control unit that notifies a predetermined notification destination when a predetermined caution condition is satisfied with respect to the personal identification information or the telephone number.
Notification system with. The notification system according to claim 1, wherein the control unit determines that a predetermined caution condition is satisfied when a change occurs in the information indicating the state of the telephone number. The notification system according to claim 1, wherein the control unit determines that a predetermined caution condition is satisfied when a plurality of different personal identification information exists in association with the same telephone number. The notification system according to claim 1, wherein the control unit determines that a predetermined caution condition is satisfied when a plurality of different telephone numbers are associated with the same personal identification information. A step in which a computer acquires data from a storage unit that stores personal identification information shown in an identity verification document, which is a document used for identity verification of a confirmation target person, and a telephone number of the confirmation target person in association with each other. When,
A step in which a computer notifies a predetermined notification destination when a predetermined caution condition is satisfied with respect to the personal identification information or the telephone number.
Notification method with. A computer program for operating a computer as the notification system according to any one of claims 1 to 4.

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