Information processing system, information processing method, and recording medium

Abstract

This information processing system comprises: an acquisition means for acquiring a plurality of images respectively corresponding to a plurality of objects using one service; an authentication means for authenticating the plurality of objects on the basis of a plurality of biological information items respectively extracted from the plurality of images; a determination means for determining, on the basis of the plurality of images, whether or not fraud is performed; and a provision means for providing said one service on the basis of the authentication result by the authentication means and the determination result by the determination means.

Description

Information Processing System, Information Processing Method, and Recording Medium

[0001] This disclosure relates to the technical field of information processing systems, information processing methods, and recording media.

[0002] As this type of system, for example, a system has been proposed that acquires a user's first biometric information and determination data from another device, acquires the user's second biometric information, and authenticates the user based on a first verification using the first biometric information and the second biometric information and a second verification using the determination data, and provides a service to the user when the authentication is successful (see Patent Document 1).

[0003] International Publication No. 2023 / 053362

[0004] This disclosure aims to provide an information processing device, an information processing method, and a recording medium for improving the technology related to the above-mentioned prior art documents.

[0005] One aspect of an information processing system includes an acquisition unit that acquires a plurality of images respectively corresponding to a plurality of targets using a single service, an authentication unit that authenticates each of the plurality of targets based on a plurality of biometric information respectively extracted from the plurality of images, a determination unit that determines whether fraud is being committed based on the plurality of images, and a provision unit that provides the single service based on the authentication result by the authentication unit and the determination result by the determination unit.

[0006] One aspect of an information processing method includes acquiring a plurality of images respectively corresponding to a plurality of targets using a single service, authenticating each of the plurality of targets based on a plurality of biometric information respectively extracted from the plurality of images, determining whether fraud is being committed based on the plurality of images, and providing the single service based on the authentication result and the determination result.

[0007] One embodiment of a recording medium contains a computer program that causes a computer to acquire multiple images corresponding to multiple targets using a single service, authenticate each of the multiple targets based on multiple biometric information extracted from each of the multiple images, determine whether or not fraud has occurred based on the multiple images, and execute an information processing method that provides the single service based on the authentication result and the determination result.

[0008] This is a block diagram showing an example of the configuration of the information processing system according to the embodiment. This is a flowchart showing an example of the operation of the information processing system according to the embodiment. This is a block diagram showing an example of the configuration of a computer. This is a block diagram showing another example of the configuration of the information processing system according to the embodiment. This is a flowchart showing an example of the operation of the determination unit according to the embodiment. This is a flowchart showing another

[0009] A first embodiment relating to an information processing system, an information processing method, and a recording medium will be described with reference to Figures 1 to 3. In the following, the first embodiment relating to an information processing system, an information processing method, and a recording medium will be described using information processing system 1.

[0010] (Configuration of the Information Processing System) The configuration of the information processing system 1 will be described with reference to Figure 1. In Figure 1, the information processing system 1 comprises an acquisition unit 11, an authentication unit 12, a determination unit 13, and a provision unit 14. The acquisition unit 11, authentication unit 12, determination unit 13, and provision unit 14 may each be implemented by different devices (for example, computers). In this case, the acquisition unit 11, authentication unit 12, determination unit 13, and provision unit 14 may be configured to communicate with each other via a network. In this case, the acquisition unit 11, authentication unit 12, determination unit 13, and provision unit 14 may be referred to as an acquisition device, an authentication device, a determination device, and a provision device, respectively.

[0011] Furthermore, the acquisition unit 11, authentication unit 12, determination unit 13, and provision unit 14 may be implemented by a single device. In this case, the information processing system 1 may be called an information processing device. Furthermore, a part of the acquisition unit 11, authentication unit 12, determination unit 13, and provision unit 14 may be implemented by one device, and the remaining parts of the acquisition unit 11, authentication unit 12, determination unit 13, and provision unit 14 may be implemented by one or more other devices. In this case, one device and one or more other devices may be configured to communicate with each other via a network.

[0012] (Operation of the Information Processing System) The operation of the information processing system 1 will be explained with reference to the flowchart in Figure 2. In Figure 2, the acquisition unit 11 acquires multiple images corresponding to multiple users (step S101). Here, multiple users are users who use the same service. In other words, multiple users are users who use the same service.

[0013] The authentication unit 12 may extract multiple biometric pieces of information corresponding to multiple users from multiple images acquired by the acquisition unit 11. Based on the extracted multiple biometric pieces of information, the authentication unit 12 performs biometric authentication for each of the multiple users (step S102). In this way, the images acquired by the acquisition unit 11 are used for biometric authentication. For this reason, the images acquired by the acquisition unit 11 can be said to be images that contain biometric information relating to the user.

[0014] For example, the image acquired by the acquisition unit 11 may be a face image including the user's face. In this case, the authentication unit 12 may perform face authentication as biometric authentication. In this case, the authentication unit 12 may extract features related to the user's face from the face image as biometric information related to the user. For example, the image acquired by the acquisition unit 11 may be an eye image including the user's eyes. In this case, the authentication unit 12 may perform iris authentication as biometric authentication. In this case, the authentication unit 12 may extract features related to the user's eyes from the eye image as biometric information related to the user. For example, the images acquired by the acquisition unit 11 may be a face image including the user's face and an eye image including the user's eyes. In this case, the authentication unit 12 may perform face-iris multimodal biometric authentication as biometric authentication.

[0015] Furthermore, the images acquired by the acquisition unit 11 are not limited to facial images and eye images. For example, the images acquired by the acquisition unit 11 may be at least one of a facial image, an eye image, a fingerprint image including the user's fingerprint, a palm print image including the user's palm print, and a vein image including the user's vein pattern. The authentication unit 12 may perform at least one of the following as biometric authentication: facial authentication, iris authentication, fingerprint authentication, palm print authentication, and vein authentication.

[0016] After the processing in step S102, the determination unit 13 determines whether or not the biometric authentication of multiple users was successful (step S103). For example, the determination unit 13 may determine that biometric authentication was successful if the biometric authentication of all multiple users was successful. In this case, the determination unit 13 may determine that biometric authentication was not successful if the biometric authentication of at least one of the multiple users failed. Alternatively, the determination unit 13 may determine that biometric authentication was successful if the biometric authentication of a predetermined number of users among the multiple users was successful.

[0017] Here, we will explain the overview of biometric authentication. The authentication unit 12 may compare the user's biometric information with pre-registered biometric information. At this time, the authentication unit 12 may calculate a matching score that indicates the degree of agreement between the user's biometric information and the registered biometric information. The authentication unit 12 may compare the matching score with a predetermined threshold. If the matching score is equal to or greater than the predetermined threshold, the authentication unit 12 may determine that the user is the person associated with the registered biometric information (i.e., the registrant). Thus, when the user is determined to be a registrant (in other words, when the matching score is equal to or greater than the predetermined threshold), this is an example of successful biometric authentication. On the other hand, when the matching score is less than the predetermined threshold, the authentication unit 12 may determine that the user is not a registrant. Thus, when the user is determined not to be a registrant (in other words, when the matching score is less than the predetermined threshold), this is an example of failed biometric authentication.

[0018] If it is determined in step S103 that biometric authentication has not been successful (step S103: No), the operation shown in Figure 2 may be terminated. On the other hand, if it is determined in step S103 that biometric authentication has been successful (step S103: Yes), the determination unit 13 uses the multiple images acquired by the acquisition unit 11 to determine whether or not fraud has occurred (step S104).

[0019] For example, the authentication unit 12 may perform facial recognition as biometric authentication. In this case, it is conceivable that someone could impersonate another person by using another person's facial image (for example, a photograph). For example, if unnatural distortion or reflection is detected in the image acquired by the acquisition unit 11, the determination unit 13 may determine that fraud has occurred. For example, if the image acquired by the acquisition unit 11 includes at least a part of the lens of the imaging device, the determination unit 13 may determine that fraud has occurred. For example, if the image acquired by the acquisition unit 11 includes multiple people, the determination unit 13 may determine that fraud has occurred.

[0020] If it is determined in step S104 that fraud has occurred (step S104: Yes), the operation shown in Figure 2 is terminated. On the other hand, if it is determined in step S104 that no fraud has occurred (step S104: No), the service provider 14 provides a single service to multiple users (step S105).

[0021] Furthermore, the process in step S104 may be performed between the processes in step S101 and step S102. In other words, the process in step S104 may be performed before the authentication unit 12 performs biometric authentication. Alternatively, the process in step S104 may be performed in parallel with the process in step S102. In other words, the process in step S104 may be performed in parallel with the biometric authentication by the authentication unit 12.

[0022] The services provided by the service provider 14 may, for example, be services related to administrative procedures. The services provided by the service provider 14 may, for example, be content distribution services. Content distribution services may include content distribution services related to a virtual space on the internet (a so-called metaverse) that can be shared by multiple users.

[0023] In this way, the information processing system 1 acquires multiple images corresponding to multiple users using a single service, authenticates each of the multiple users based on multiple biometric information extracted from each of the multiple images, determines whether or not fraud has occurred based on the multiple images, and performs an information processing method to provide a single service based on the authentication result and the determination result.

[0024] (Computer Configuration) The acquisition unit 11, authentication unit 12, determination unit 13, and provision unit 14 described above may be implemented by the computer COM shown in Figure 3.

[0025] In Figure 3, the computer COM comprises an arithmetic unit 110, a storage device 120, a communication device 130, an input device 140, and an output device 150. The arithmetic unit 110, storage device 120, communication device 130, input device 140, and output device 150 may be connected via a data bus 160. The computer COM does not necessarily have to include at least one of the input device 140 and the output device 150.

[0026] The arithmetic unit 110 may have a processor 1101. Furthermore, the arithmetic unit 110 may have other processors in addition to the processor 1101. In other words, the arithmetic unit 110 may have one or more processors. Furthermore, the processor 1101 may be a multi-core processor. If the arithmetic unit 110 has a single processor 1101 that is a multi-core processor, then logically, the arithmetic unit 110 can be said to have multiple processors.

[0027] The processor 1101 may be at least one of the following: a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), an FPGA (Field Programmable Gate Array), a TPU (Tensor Processing Unit), and a quantum processor.

[0028] The storage device 120 may have memory 1201. In addition to memory 1201, the storage device 120 may have other types of memory. That is, the storage device 120 may have one or more types of memory. Memory 1201 may be at least one of the following: RAM (Random Access Memory), ROM (Read Only Memory), hard disk drive, magneto-optical disk drive, SSD (Solid State Drive), and optical disk array. Therefore, the storage device 120 may have memory 1201 as a non-temporary recording medium.

[0029] The storage device 120 is capable of storing desired data. The memory 1201 of the storage device 120 may store the computer program 1201a that the arithmetic unit 110 will execute. The storage device 120 may temporarily store data that the arithmetic unit 110 will use temporarily when the arithmetic unit 110 is executing the computer program 1201a.

[0030] Furthermore, the computer program 1201a may be recorded on a recording medium that is readable by a computer and not temporary. In this case, the computer program 1201a may be stored in the memory 1201 by reading the recording medium using a recording medium reading device (not shown) provided by the computer COM. Furthermore, at least one of the following may be used as the recording medium: an optical disc, a magnetic medium, a magneto-optical disc, a semiconductor memory, and any other medium capable of storing a program. Furthermore, the computer program 1201a may be obtained (in other words, downloaded) from an external device (not shown) of the computer COM via the communication device 130. The obtained computer program 1201a may be stored in the memory 1201.

[0031] The communication device 130 may be capable of communicating with devices outside the computer COM. Furthermore, the communication device 130 may use either wired or wireless communication.

[0032] The input device 140 is a device capable of receiving information input to the computer COM from an external source. The input device 140 may include an operating device (e.g., a keyboard, mouse, touch panel, etc.) that can be operated by the user of the computer COM. The input device 140 may include a recording medium reader capable of reading information recorded on a recording medium that can be attached to and detached from the computer COM, such as a USB (Universal Serial Bus) memory. When information is input to the computer COM via the communication device 130 (in other words, when the computer COM acquires information via the communication device 130), the communication device 130 may function as an input device.

[0033] The output device 150 is a device capable of outputting information to the outside of the computer COM. The output device 150 may output visual information such as characters and images, auditory information such as sounds, or tactile information such as vibrations. The output device 150 may include, for example, at least one of a display, speaker, printer, and vibration motor. The output device 150 may also be capable of outputting information to a recording medium that can be attached to or detached from the computer COM, such as a USB memory stick. When the computer COM outputs information via the communication device 130, the communication device 130 may function as an output device.

[0034] For example, the acquisition unit 11 may be implemented by a computer COM. In this case, the processor 1101 of the arithmetic unit 110 may execute the processing that the acquisition unit 11 should perform together with the memory 1201 of the storage device 120 in which the computer program 1201a is stored (in other words, together with the memory 1201 and the computer program 1201a stored in the memory 1201). For example, by the processor 1101 executing the computer program 1201a, a logical functional block for executing the processing that the acquisition unit 11 should perform may be realized within the arithmetic unit 110 (for example, within the processor 1101).

[0035] For example, the authentication unit 12 may be implemented by a computer COM. In this case, the processor 1101 of the arithmetic unit 110 may execute the processing to be performed by the authentication unit 12 together with the memory 1201 of the storage device 120 in which the computer program 1201a is stored. For example, the processor 1101 may execute the computer program 1201a to realize a logical functional block within the arithmetic unit 110 for executing the processing to be performed by the authentication unit 12.

[0036] For example, the determination unit 13 may be implemented by a computer COM. In this case, the processor 1101 of the arithmetic unit 110 may execute the processing that the determination unit 13 should perform together with the memory 1201 of the storage device 120 in which the computer program 1201a is stored. For example, the processor 1101 may execute the computer program 1201a to realize a logical functional block within the arithmetic unit 110 for executing the processing that the determination unit 13 should perform.

[0037] For example, the providing unit 14 may be implemented by a computer COM. In this case, the processor 1101 of the arithmetic unit 110 may execute the processing that the providing unit 14 should perform together with the memory 1201 of the storage device 120 in which the computer program 1201a is stored. For example, the processor 1101 may execute the computer program 1201a to realize a logical functional block within the arithmetic unit 110 for executing the processing that the providing unit 14 should perform.

[0038] For example, the acquisition unit 11, authentication unit 12, determination unit 13, and provision unit 14 (in other words, the information processing system 1) may be implemented by a computer COM. In this case, the processor 1101 of the arithmetic unit 110 may execute the processing that the acquisition unit 11, authentication unit 12, determination unit 13, and provision unit 14 should perform, together with the memory 1201 of the storage device 120 in which the computer program 1201a is stored. For example, by the processor 1101 executing the computer program 1201a, logical functional blocks for executing the processing that the acquisition unit 11, authentication unit 12, determination unit 13, and provision unit 14 should perform may be implemented within the arithmetic unit 110.

[0039] In this case, the computer program 1201a may be a computer program that causes computer COM to acquire multiple images corresponding to multiple users using a single service, authenticate each of the multiple users based on multiple biometric information extracted from each of the multiple images, determine whether or not fraud is being committed based on the multiple images, and execute an information processing method to provide a single service based on the authentication result and the determination result. As described above, the computer program 1201a may be recorded on a recording medium that is computer-readable and not temporary. The recording medium may contain a computer program that causes computer COM to acquire multiple images corresponding to multiple users using a single service, authenticate each of the multiple users based on multiple biometric information extracted from each of the multiple images, determine whether or not fraud is being committed based on the multiple images, and execute an information processing method to provide a single service based on the authentication result and the determination result.

[0040] (Technical Effects) For example, online services, which are services provided via the internet, include both paid and free services. Online services also include membership-based services. However, with online services, it is difficult for the service provider to actually verify the user. For example, someone who has not paid may impersonate someone who has paid and receive a paid service. For example, someone who is not a member may impersonate someone who is a member and receive a membership-based service. For example, someone who has not paid or is not a member may eavesdrop on paid content (i.e., paid services) provided to someone who has paid, or content (i.e., membership-based services) provided to a member.

[0041] On the other hand, in the information processing system 1, when biometric authentication of a plurality of users is successful and it is determined that no fraud has been committed, a service is provided. Therefore, according to the information processing system 1 according to the first embodiment, it is possible to suppress a person without the qualification to receive the service from receiving the service without permission.

[0042] For example, in order to receive services provided by an administrative agency or a financial institution, it may be necessary to confirm the identity of the person. On the other hand, in order to receive a service, an agent may perform procedures at the window of an administrative agency or a financial institution on behalf of the person. When biometric authentication is used for identity confirmation, it may be impossible to confirm the identity with the biometric information of the agent. That is, in this case, there is a possibility that the agent cannot perform the procedures.

[0043] As described above, in the information processing system 1, when biometric authentication of a plurality of users is successful and it is determined that no fraud has been committed, a service is provided. The plurality of users may include one user and an agent of the one user. For example, when biometric authentication of one user at home and biometric authentication of an agent at the window are successful and it is determined that no fraud has been committed, the procedures at the window may proceed. As a result, the service may be provided. Therefore, according to the information processing system 1 according to the first embodiment, even when identity confirmation by biometric authentication is required, it is possible to enable procedures by an agent.

[0044] <Second Embodiment> A second embodiment of an information processing system, an information processing method, and a recording medium will be described with reference to FIG. 4. Hereinafter, using the information processing system 1, a second embodiment of an information processing system, an information processing method, and a recording medium will be described. Note that, for the second embodiment, descriptions overlapping with those of the first embodiment will be omitted as appropriate. Note that the same reference numerals are assigned to common parts in the drawings.

[0045] In the second embodiment, users of the information processing system 1 include user U1 and user U2. User U1 uses the terminal device TA1. User U2 uses the terminal device TA2. The terminal devices TA1 and TA2 have cameras. That is, the terminal devices TA1 and TA2 have imaging functions. Note that the terminal devices TA1 and TA2 may be at least one of a smartphone, a tablet terminal, a personal computer, and a head-mounted display. Note that the head-mounted display may be a stand-alone head-mounted display or a head-mounted display used in a state of being connected to another device such as a personal computer.

[0046] In FIG. 4, the information processing system 1, the terminal device TA1, and the terminal device TA2 are configured to be able to communicate with each other via the network NW. Note that the network NW may be a wide-area network such as the Internet. Alternatively, the network NW may be a local-area network such as a Local Area Network (LAN). Note that the terminal devices TA1 and TA2 may perform wired communication or wireless communication.

[0047] In the second embodiment, it is assumed that the service provided by the providing unit 14 of the information processing system 1 is a service provided by an administrative agency or a financial institution. Hereinafter, the operation of the information processing system 1 will be described with specific examples.

[0048] (First example) In the first example, user U1 is a person who receives the service, and user U2 is an agent of user U1. The terminal device TA1 may be installed at the home of user U1. The terminal device TA2 may be installed at the window of an administrative agency or a financial institution. The biometric information related to user U1 and the biometric information related to user U2 are registered in advance.

[0049] For example, the acquisition unit 11 of the information processing system 1 may transmit first instruction information to terminal device TA1 instructing user U1 to take an image. The acquisition unit 11 may transmit second instruction information to terminal device TA2 instructing user U2 to take an image. Here, the acquisition unit 11 may transmit the first instruction information and the second instruction information simultaneously.

[0050] Upon receiving the first instruction information, terminal device TA1 may generate a first image including user U1 by capturing an image of user U1. The first image may be a face image including user U1's face, or an eye image including user U1's eyes. Terminal device TA1 may transmit the first image to information processing system 1.

[0051] Upon receiving the second instruction information, terminal device TA2 may generate a second image including user U2 by capturing an image of user U2. The second image may be a face image including user U2's face, or an eye image including user U2's eyes. Terminal device TA2 may transmit the second image to the information processing system 1.

[0052] Furthermore, the timing at which terminal device TA2 images user U2 and the timing at which terminal device TA1 images user U1 may be different. However, if the difference between the timing at which terminal device TA2 images user U2 and the timing at which terminal device TA1 images user U1 exceeds an allowable time (for example, 5 minutes), the information processing system 1 may transmit error information indicating that an error has occurred to terminal devices TA1 and TA2.

[0053] The acquisition unit 11 of the information processing system 1 may acquire a first image and a second image. The authentication unit 12 of the information processing system 1 may extract biometric information relating to user U1 from the first image. The authentication unit 12 may perform biometric authentication based on the biometric information relating to user U1 and pre-registered biometric information. Similarly, the authentication unit 12 may extract biometric information relating to user U2 from the second image. The authentication unit 12 may perform biometric authentication based on the biometric information relating to user U2 and pre-registered biometric information. The biometric authentication methods for user U1 and user U2 may be the same or different. For example, if terminal device TA1 is a head-mounted display, the biometric authentication method for user U1 may be iris recognition. For example, if terminal device TA2 is a tablet terminal, the biometric authentication method for user U2 may be facial recognition.

[0054] The determination unit 13 of the information processing system 1 may determine whether or not fraud has occurred based on the first image and the second image. If biometric authentication of users U1 and U2 is successful and the determination unit 13 determines that no fraud has occurred, the service provision unit 14 of the information processing system 1 may provide a service. For example, the service provided by the service provision unit 14 may be a procedural service at the counter of an administrative agency or financial institution.

[0055] (Second Case) In the second case, user U1 is a family member of the person receiving the service, and user U2 is user U1's agent. In the second case, the person receiving the service is deceased. Terminal device TA1 may be installed at user U1's home. Terminal device TA2 may be installed at a financial institution's counter. Biometric information relating to user U1 and user U2 has been registered in advance.

[0056] For example, the acquisition unit 11 of the information processing system 1 may transmit first instruction information to terminal device TA1 instructing user U1 to take an image. The acquisition unit 11 may transmit second instruction information to terminal device TA2 instructing user U2 to take an image. Here, the acquisition unit 11 may transmit the first instruction information and the second instruction information simultaneously.

[0057] Upon receiving the first instruction information, terminal device TA1 may generate a first image including user U1 by capturing an image of user U1. The first image may be a face image including user U1's face, or an eye image including user U1's eyes. Terminal device TA1 may transmit the first image to information processing system 1.

[0058] Upon receiving the second instruction information, terminal device TA2 may generate a second image including user U2 by capturing an image of user U2. The second image may be a face image including user U2's face, or an eye image including user U2's eyes. Terminal device TA2 may transmit the second image to the information processing system 1.

[0059] The acquisition unit 11 of the information processing system 1 may acquire a first image and a second image. The authentication unit 12 of the information processing system 1 may extract biometric information relating to user U1 from the first image. The authentication unit 12 may perform biometric authentication based on the biometric information relating to user U1 and pre-registered registered biometric information. Similarly, the authentication unit 12 may extract biometric information relating to user U2 from the second image. The authentication unit 12 may perform biometric authentication based on the biometric information relating to user U2 and pre-registered registered biometric information.

[0060] The determination unit 13 of the information processing system 1 may determine whether or not fraud has occurred based on the first image and the second image. If biometric authentication of users U1 and U2 is successful and the determination unit 13 determines that no fraud has occurred, the service provision unit 14 of the information processing system 1 may provide a service. For example, the service provided by the service provision unit 14 may be the procedure for unfreezing a financial institution's account.

[0061] Furthermore, the determination unit 13 may determine the relationship between the deceased service recipient and user U1, and the relationship between user U1 and user U2. For example, the determination unit 13 may determine the relationship between the deceased service recipient and user U1 based on a family register transcript. For example, the determination unit 13 may determine the relationship between user U1 and user U2 based on a power of attorney.

[0062] If biometric authentication of users U1 and U2 is successful, and the determination unit 13 determines that no fraud has occurred, and the determination unit 13 determines that there is no problem with the relationship between the deceased service recipient and user U1, and the determination unit 13 determines that there is no problem with the relationship between user U1 and user U2, then the service provider 14 may provide the service.

[0063] (Technical Effects) According to the information processing system 1 of the second embodiment, similar to the first embodiment described above, even when identity verification by biometric authentication is required, it is possible to enable procedures to be carried out by an agent.

[0064] <Third Embodiment> A third embodiment relating to an information processing system, an information processing method, and a recording medium will be described with reference to Figure 4. In the following, the third embodiment relating to an information processing system, an information processing method, and a recording medium will be described using information processing system 1. In the third embodiment, explanations that overlap with the explanations of the first and second embodiments will be omitted as appropriate. In addition, common parts in the drawings are denoted by the same reference numerals.

[0065] In the third embodiment, users U1 and U2 are given as users of the information processing system 1. User U1 uses terminal device TA1. User U2 uses terminal device TA2. In the third embodiment, terminal devices TA1 and TA2 are head-mounted displays. Terminal device TA1, as a head-mounted display, has a camera capable of capturing images of the eyes of user U1 who is wearing terminal device TA1. Similarly, terminal device TA2, as a head-mounted display, has a camera capable of capturing images of the eyes of user U2 who is wearing terminal device TA2. The cameras in terminal devices TA1 and TA2 may be cameras for eye tracking.

[0066] In the third embodiment, the information processing system 1's provisioning unit 14 may distribute content as a service to terminal devices TA1 and TA2, which are head-mounted displays. Examples of content include at least one of content related to paid or membership-based seminars and content related to paid movies. In other words, in the third embodiment, at least one of online seminars and online movie screenings may be provided as a service.

[0067] The operation of the information processing system 1 will be described below. For example, the acquisition unit 11 of the information processing system 1 may transmit first instruction information to terminal device TA1 instructing user U1 to take an image. The acquisition unit 11 may transmit second instruction information to terminal device TA2 instructing user U2 to take an image. Here, the acquisition unit 11 may transmit the first instruction information and the second instruction information simultaneously.

[0068] Upon receiving the first instruction information, terminal device TA1 may generate a first eye image including the eyes of user U1 by capturing an image of user U1. Terminal device TA1 may transmit the first eye image to the information processing system 1. Upon receiving the second instruction information, terminal device TA2 may generate a second eye image including the eyes of user U2 by capturing an image of user U2. Terminal device TA2 may transmit the second eye image to the information processing system 1.

[0069] The acquisition unit 11 of the information processing system 1 may acquire a first eye image and a second eye image. The authentication unit 12 of the information processing system 1 may extract biometric information relating to user U1 from the first eye image. The authentication unit 12 may perform iris authentication as biometric authentication based on the biometric information relating to user U1 and pre-registered registered biometric information. Similarly, the authentication unit 12 may extract biometric information relating to user U2 from the second image. The authentication unit 12 may perform iris authentication as biometric authentication based on the biometric information relating to user U2 and pre-registered registered biometric information.

[0070] The determination unit 13 of the information processing system 1 may determine whether or not fraud has occurred based on the first and second images. If biometric authentication of users U1 and U2 is successful and the determination unit 13 determines that no fraud has occurred, the service provision unit 14 of the information processing system 1 may provide the service. As a result, content may be delivered to terminal devices TA1 and TA2.

[0071] (Technical Effects) According to the information processing system 1 of the third embodiment, similar to the first embodiment described above, it is possible to prevent persons who are not qualified to receive the service from receiving the service without permission.

[0072] <Fourth Embodiment> A fourth embodiment relating to an information processing system, an information processing method, and a recording medium will be described with reference to Figures 4 and 5. In the following, the fourth embodiment relating to an information processing system, an information processing method, and a recording medium will be described using information processing system 1. In the fourth embodiment, explanations that overlap with the explanations of the first to third embodiments will be omitted as appropriate. Common parts in the drawings are denoted by the same reference numerals.

[0073] In the fourth embodiment, similar to the third embodiment described above, terminal devices TA1 and TA2 are head-mounted displays. Terminal device TA1, as a head-mounted display, has a camera capable of capturing images of the eyes of user U1 wearing terminal device TA1. Similarly, terminal device TA2, as a head-mounted display, has a camera capable of capturing images of the eyes of user U2 wearing terminal device TA2. The information processing system 1's provisioning unit 14 may distribute content to terminal devices TA1 and TA2, which are head-mounted displays, as a service.

[0074] In the fourth embodiment, a specific example of the operation of the determination unit 13 of the information processing system 1 (for example, a specific example of the processing in step S104 described above) will be explained with reference to the flowchart in Figure 5.

[0075] Terminal device TA1 may generate a first eye image including the eyes of user U1 by capturing an image of user U1. Terminal device TA1 may transmit the first eye image to the information processing system 1. Terminal device TA2 may generate a second eye image including the eyes of user U2 by capturing an image of user U2. Terminal device TA2 may transmit the second eye image to the information processing system 1.

[0076] The acquisition unit 11 of the information processing system 1 may acquire a first eye image and a second eye image. In Figure 5, the determination unit 13 determines whether or not a foreign object is included in at least one of the first eye image and the second eye image (step S201). Here, "foreign object" may mean something that is not originally included in the eye image. An example of a foreign object is a small camera. However, it is unlikely that the entire small camera will be included in the eye image. For this reason, it is difficult to detect a small camera from the eye image by image processing such as pattern matching. For these reasons, the determination unit 13 is configured to determine whether or not a foreign object is included in the image (for example, the first eye image and the second eye image).

[0077] If, during the process of step S201, it is determined that foreign matter is present in at least one of the first image and the second image (step S201: Yes), the determination unit 13 determines that fraud has occurred (step S202). On the other hand, if, during the process of step S201, it is determined that foreign matter is not present in the first image and the second image (step S201: No), the determination unit 13 determines that fraud has not occurred (step S203).

[0078] (Technical Effects) According to the information processing system 1 of the fourth embodiment, it is possible to determine relatively easily whether or not fraud is being committed.

[0079] <Fifth Embodiment> A fifth embodiment relating to an information processing system, an information processing method, and a recording medium will be described with reference to Figures 4 and 6. In the following, the fifth embodiment relating to an information processing system, an information processing method, and a recording medium will be described using information processing system 1. In the fifth embodiment, explanations that overlap with the explanations of the first to fourth embodiments will be omitted as appropriate. Common parts in the drawings are denoted by the same reference numerals.

[0080] In the fifth embodiment, similar to the third embodiment described above, terminal devices TA1 and TA2 are head-mounted displays. Terminal device TA1, as a head-mounted display, has a camera capable of capturing images of the eyes of the user (e.g., user U1) wearing terminal device TA1. Similarly, terminal device TA2, as a head-mounted display, has a camera capable of capturing images of the eyes of the user (e.g., user U2) wearing terminal device TA2. The information processing system 1's provisioning unit 14 may distribute content to terminal devices TA1 and TA2, which are head-mounted displays, as a service.

[0081] In the fifth embodiment, a specific example of the operation of the determination unit 13 when a service is provided by the provision unit 14 of the information processing system 1 (here, during content distribution) will be described with reference to the flowchart in Figure 6. In the fifth embodiment, terminal device TA1 may generate a first image by taking images at a predetermined interval. Terminal device TA1 may transmit the first image to the information processing system 1 at a predetermined interval. Terminal device TA2 may generate a second image by taking images at a predetermined interval. Terminal device TA1 may transmit the second image to the information processing system 1 at a predetermined interval.

[0082] In Figure 6, the determination unit 13 determines whether or not the service provider 14 is providing a service (step S301). If, in the process of step S301, it is determined that the service provider 14 is not providing a service (step S301: No), the operation shown in Figure 6 is terminated. Note that in the process of step S301, if it is determined that the service provider 14 is not providing a service, this could be, for example, because the distribution of content has ended.

[0083] In the process of step S301, if it is determined that the service provider 14 is providing a service (step S301: Yes), the determination unit 13 determines whether or not the first image and the second image contain biometric information (step S302). In the process of step S302, if it is determined that at least one of the first image and the second image does not contain biometric information (step S302: No), the determination unit 13 determines that fraud is occurring (step S303). In this case, the service provider 14 of the information processing system 1 may discontinue providing the service.

[0084] In the process of step S302, if it is determined that the first image and the second image contain biological information (step S302: Yes), the determination unit 13 determines that no fraud has occurred (step S304).

[0085] Furthermore, in the operation shown in the flowchart of Figure 2, if the images (for example, the first image and the second image) do not contain biometric information, biometric authentication will fail. For this reason, in the operation shown in the flowchart of Figure 2, the service provider 14 will not provide the service regardless of the determination result of the determination unit 13.

[0086] (Technical effect) After content distribution to the head-mounted display begins (i.e., after the service is provided), there is a possibility that the user may remove the head-mounted display and illegally record the distributed content with a camera. According to the information processing system 1 of the fifth embodiment, it is possible to determine relatively easily whether or not illegal activity has occurred.

[0087] <Sixth Embodiment> The sixth embodiment relating to the information processing system, information processing method, and recording medium will be described with reference to Figures 4 and 7. In the following, the sixth embodiment relating to the information processing system, information processing method, and recording medium will be described using the information processing system 1. In the sixth embodiment, explanations that overlap with the explanations of the first to fifth embodiments will be omitted as appropriate. In addition, common parts in the drawings are denoted by the same reference numerals.

[0088] In the sixth embodiment, similar to the third embodiment described above, terminal devices TA1 and TA2 are head-mounted displays. Terminal device TA1, as a head-mounted display, has a camera capable of capturing images of the eyes of the user (e.g., user U1) wearing terminal device TA1. Similarly, terminal device TA2, as a head-mounted display, has a camera capable of capturing images of the eyes of the user (e.g., user U2) wearing terminal device TA2. The information processing system 1's provisioning unit 14 may distribute content to terminal devices TA1 and TA2, which are head-mounted displays, as a service.

[0089] In the sixth embodiment, a specific example of the operation of the information processing system 1 when a service is provided by the service provision unit 14 of the information processing system 1 (here, during content distribution) will be described with reference to the flowchart in Figure 7. In the sixth embodiment, terminal device TA1 may generate a first image by taking images at a predetermined interval. Terminal device TA1 may transmit the first image to the information processing system 1 at a predetermined interval. Terminal device TA2 may generate a second image by taking images at a predetermined interval. Terminal device TA1 may transmit the second image to the information processing system 1 at a predetermined interval.

[0090] In Figure 7, the determination unit 13 determines whether or not the service provider 14 is providing a service (step S401). If, in the process of step S401, it is determined that the service provider 14 is not providing a service (step S401: No), the operation shown in Figure 7 is terminated. Note that in the process of step S401, if it is determined that the service provider 14 is not providing a service, it may be, for example, because the distribution of content has ended.

[0091] In the process of step S401, if it is determined that the service provider 14 is providing a service (step S401: Yes), the acquisition unit 11 acquires the first image and the second image (step S402). The authentication unit 12 may extract biometric information relating to the user of terminal device TA1 (for example, user U1) from the first image. The authentication unit 12 may extract biometric information relating to the user of terminal device TA2 (for example, user U2) from the second image. Based on the extracted biometric information, the authentication unit 12 performs biometric authentication for each of the multiple users (step S403).

[0092] After the processing in step S403, the determination unit 13 determines whether or not the biometric authentication of multiple users was successful (step S404). For example, the determination unit 13 may determine that biometric authentication was successful if the biometric authentication of all multiple users was successful. Alternatively, the determination unit 13 may determine that biometric authentication was successful if the biometric authentication of a predetermined number of users among the multiple users was successful.

[0093] In step S404, if it is determined that biometric authentication was successful (step S404: Yes), the determination unit 13 uses the first and second images to determine whether or not fraud has occurred (step S405). A specific example of the process in step S405 is the operation shown in the flowchart of Figure 5 (see the fourth embodiment). In step S405, if it is determined that no fraud has occurred (step S405: No), the service provision unit 14 continues to provide the service (step S406).

[0094] If it is determined in step S404 that biometric authentication has not been successful (step S404: No), the service provider 14 discontinues providing the service (step S407). If it is determined in step S405 that fraud has occurred (step S405: Yes), the service provider 14 discontinues providing the service (step S407).

[0095] (Technical Effects) For example, after a legitimate user performs biometric authentication and content distribution to the head-mounted display begins (i.e., after the service is provided), a person who is not a legitimate user may wear the head-mounted display on behalf of the legitimate user. A legitimate user may be at least one of the following: a user who has paid the prescribed fee if the content is paid content, or a registered user if the content is member-only content. In the information processing system 1 according to the sixth embodiment, biometric authentication is performed even while the service is being provided. If biometric authentication fails, the provision of the service is stopped. Therefore, according to the information processing system 1 according to the sixth embodiment, it is possible to prevent a person who is not a legitimate user from receiving the service after the service has been provided.

[0096] <Seventh Embodiment> The seventh embodiment relating to the information processing system, information processing method, and recording medium will be described with reference to Figure 4. In the following, the seventh embodiment relating to the information processing system, information processing method, and recording medium will be described using the information processing system 1. In the seventh embodiment, explanations that overlap with the explanations of the first to sixth embodiments will be omitted as appropriate. In addition, common parts in the drawings are denoted by the same reference numerals.

[0097] In the seventh embodiment, similar to the third embodiment described above, terminal devices TA1 and TA2 are head-mounted displays. Terminal device TA1, as a head-mounted display, has a camera capable of capturing images of the eyes of user U1 wearing terminal device TA1. Similarly, terminal device TA2, as a head-mounted display, has a camera capable of capturing images of the eyes of user U2 wearing terminal device TA2. The information processing system 1's provisioning unit 14 may distribute content to terminal devices TA1 and TA2, which are head-mounted displays, as a service.

[0098] In the seventh embodiment, the content distributed to terminal devices TA1 and TA2 is metaverse-related content. Metaverse-related content may be, for example, content relating to an area in a virtual space that can be accessed when a predetermined number of users are logged in.

[0099] Terminal device TA1 may generate a first image by taking images at a predetermined interval. Terminal device TA1 may transmit the first image to the information processing system 1 at a predetermined interval. Terminal device TA2 may generate a second image by taking images at a predetermined interval. Terminal device TA1 may transmit the second image to the information processing system 1 at a predetermined interval.

[0100] (Operation of the Information Processing System) The operation of the information processing system 1 according to the seventh embodiment may be the same as the operation shown in the flowchart of Figure 2. That is, the acquisition unit 11 may acquire the first image and the second image (step S101). The authentication unit 12 may extract biometric information relating to user U1 from the first image. The authentication unit 12 may extract biometric information relating to user U2 from the second image. The authentication unit 12 may perform biometric authentication of users U1 and U2 based on the extracted biometric information (step S102).

[0101] After the processing in step S102, the determination unit 13 determines whether or not the biometric authentication of a predetermined number of users was successful (step S103). Here, it is assumed that users U1 and U2 are the predetermined number of users. If the biometric authentication of users U1 and U2 is successful, the determination unit 13 may determine that the biometric authentication of the predetermined number of users was successful. On the other hand, if the biometric authentication of at least one of users U1 and U2 fails, the determination unit 13 may determine that the biometric authentication of the predetermined number of users failed.

[0102] In the process of step S103, if it is determined that biometric authentication of a predetermined number of users has been successful (step S103: Yes), the determination unit 13 may use the multiple images acquired by the acquisition unit 11 to determine whether or not fraud has occurred (step S104). In the process of step S104, if it is determined that no fraud has occurred (step S104: No), the provision unit 14 may distribute content relating to an area in the virtual space that can be accessed when a predetermined number of users are logged in (step S105).

[0103] Furthermore, after the content distribution has started, the information processing system 1 may perform the operations shown in the flowchart of Figure 7 (see the sixth embodiment).

[0104] (Technical Effects) According to the information processing system 1 of the seventh embodiment, content related to the metaverse can be distributed. In particular, according to the information processing system 1 of the seventh embodiment, content related to an area in a virtual space that can be accessed when a predetermined number of users are logged in can be distributed.

[0105] (First Modification) In addition to images (for example, the first image and the second image), the acquisition unit 11 may acquire location information indicating the location of each of multiple users. The user's location may be the location of the terminal device used by the user (for example, terminal devices TA1 and TA2). The location of the terminal device may be at least one of the following: a location detected by the GPS (Global Positioning System) of the terminal device, a location detected using information from a Wi-Fi® access point, a location detected using the signal strength of a mobile phone base station, and a location detected using an IP address.

[0106] The determination unit 13 may determine whether multiple users (for example, users U1 and U2) are within a predetermined range in the real world. The provision unit 14 may, if biometric authentication of the predetermined multiple users is successful, and the predetermined multiple users are within a predetermined range in the real world, and no fraudulent activity has occurred, deliver content relating to an area in the virtual world that can be accessed when the predetermined multiple users are logged in.

[0107] (Second Modification) For example, the content provided as a service by the service provider 14 may be content that requires payment processing within the metaverse. For example, content that requires payment processing within the metaverse may include an art museum built within the metaverse, a movie screened within the metaverse, a music concert held within the metaverse, etc. User U1 has a first account for logging into the metaverse. User U2 has a second account for logging into the metaverse. Payment processing will be carried out in a payment system (not shown). The payment system may constitute part of the information processing system 1. In other words, the information processing system 1 may include a payment system.

[0108] (Case 1) Users U1 and U2 each make a payment. The first account is linked to the payment information related to user U1. The second account is linked to the payment information related to user U2. In this case, the payment system may use the payment information related to user U1 to process the payment for user U1. The payment system may send information indicating that the payment has been completed to the information processing system 1, linked to the first account. Similarly, the payment system may use the payment information related to user U2 to process the payment for user U2. The payment system may send information indicating that the payment has been completed to the information processing system 1, linked to the second account.

[0109] The determination unit 13 of the information processing system 1 may determine whether or not payments for users U1 and U2 have been completed. If it is determined that biometric authentication for users U1 and U2 has been successful, that payments for users U1 and U2 have been completed, and that no fraud has occurred, the provision unit 14 of the information processing system 1 may deliver content to users U1 and U2.

[0110] The payment information described above may be information about electronic money or virtual currency usable within the metaverse. For example, the balance of electronic money or virtual currency indicated by the payment information for user U2 linked to the second account may be less than the amount required to receive content. In this case, user U1 may transfer the electronic money or virtual currency to user U2.

[0111] For example, user U1 may request the payment system to transfer a portion of the balance of electronic money or virtual currency indicated by the payment information relating to user U1 to user U2. For example, the payment system may add a portion of the balance of electronic money or virtual currency indicated by the payment information relating to user U1 to the balance of electronic money or virtual currency indicated by the payment information relating to user U2.

[0112] (Second example) User U1 pays the expenses for two people, U1 and U2. The first account is linked to the payment information for user U1. For example, user U1 may request the information processing system 1 to perform a grouping process that includes user U1 and user U2 in one group. In this case, the information processing system 1 may include the first account for user U1 and the second account for user U2 in one group. The information processing system 1 may further set user U1, who requested the grouping process, as the representative of the group. The representative of the group may be changed at the request of the user.

[0113] User U1 may request the payment system to pay for the expenses of all users in the group (in this case, users U1 and U2). In this case, the payment system may use the payment information pertaining to user U1 to process the payment for the group to which users U1 and U2 belong. In other words, the payment system may process payments on a group basis.

[0114] (Third example) For example, user U1 and user U2 may be family members. The first account related to user U1 may be set as the representative account. When a second account related to user U2 is registered, the second account may be linked to the first account. In this case, the second account may be registered as follows: First, user U1 may perform biometric authentication using terminal device TA1, which is a head-mounted display. After successful biometric authentication of user U1, user U2 may register their biometric information (for example, biometric information related to user U2's iris) using terminal device TA1 within a predetermined time. As a result, the second account related to user U2 may be linked to the first account related to user U1.

[0115] In this case, the first account is linked to payment information pertaining to user U1. On the other hand, the second account does not need to be linked to payment information. Alternatively, the second account may be linked to payment information pertaining to user U1. In the third example, whether users U1 and U2 each make a payment, or whether user U1 pays for the expenses of both users U1 and U2, the payment system may process the payment using the payment information pertaining to user U1.

[0116] <Eighth Embodiment> The eighth embodiment relating to the information processing system, information processing method, and recording medium will be described with reference to Figure 4. In the following, the eighth embodiment relating to the information processing system, information processing method, and recording medium will be described using the information processing system 1. In the eighth embodiment, explanations that overlap with the explanations of the first to seventh embodiments will be omitted as appropriate. In addition, common parts in the drawings are denoted by the same reference numerals.

[0117] In the eighth embodiment, similar to the third embodiment described above, terminal devices TA1 and TA2 are head-mounted displays. Terminal device TA1, as a head-mounted display, has a camera capable of capturing images of the eyes of the user (e.g., user U1) wearing terminal device TA1. Similarly, terminal device TA2, as a head-mounted display, has a camera capable of capturing images of the eyes of the user (e.g., user U2) wearing terminal device TA2. The provisioning unit 14 of the information processing system 1 may distribute content to terminal devices TA1 and TA2, which are head-mounted displays, as a service. In the eighth embodiment, the content distributed to terminal devices TA1 and TA2 is assumed to be metaverse content.

[0118] In the eighth embodiment, user U1 and user U2 are parent and child. Here, user U1 is the parent of user U2, and user U2 is the child of user U1. When user U2, who is the child (i.e., a minor), uses a service provided by the information processing system 1 (for example, content distribution), user U2 may make a payment without the permission of their parent, user U1.

[0119] User U1 is logged into the metaverse provided by Information Processing System 1 using terminal device TA1. User U2 is logged into the metaverse provided by Information Processing System 1 using terminal device TA2. The first account used by User U1 to log into the metaverse is linked to User U1's payment information. The second account used by User U2 to log into the metaverse is also linked to User U1's payment information. For example, the payment information for User U1 may be, for example, User U1's credit card information.

[0120] Payment processing within the metaverse shall be carried out by a payment system (not shown). When user U2 requests payment processing within the metaverse, the payment system may send request information to the information processing system 1 indicating that user U2 has requested payment processing. Upon receiving the request information, the information processing system 1 may ask user U1 whether or not to authorize user U2 to make the payment. For example, the terminal device TA1 used by user U1 may display the words or image, "Do you authorize user U2 to make the payment?".

[0121] If user U1 authorizes user U2 to make a payment, the information processing system 1 may send authorization information to the payment system indicating that user U2's payment has been authorized. Upon receiving the authorization information, the payment system may proceed with the payment process. On the other hand, if user U1 does not authorize user U2 to make a payment, the information processing system 1 may send denial information to the payment system indicating that user U2's payment has not been authorized. Upon receiving the denial information, the payment system may cancel the payment process. For example, the terminal device TA2 used by user U2 may display the words or image "Payment cannot be processed."

[0122] (Technical Effects) According to the information processing system 1 of the eighth embodiment, it is possible to prevent minors from making payment transactions without the permission of their guardians.

[0123] (Modification) For example, user U1 may perform biometric authentication using terminal device TA2. After successful biometric authentication of user U1, user U2 may register their biometric information (for example, biometric information relating to user U2's iris) using terminal device TA2 within a predetermined time. In this case, information processing system 1 may register user U2's biometric information in association with a guest account that is not granted payment ability. With this configuration, user U2 can use the services provided by information processing system 1, while being prohibited from making payments.

[0124] <Note> Some or all of the above embodiments may also be described as follows, but are not limited to the following.

[0125] (Note 1) An information processing system comprising: acquisition means for acquiring multiple images corresponding to multiple targets using a single service; authentication means for authenticating each of the multiple targets based on multiple biometric information extracted from each of the multiple images; determination means for determining whether or not fraud is occurring based on the multiple images; and provision means for providing the single service based on the authentication result by the authentication means and the determination result by the determination means.

[0126] (Note 2) The information processing system according to Note 1, wherein the plurality of targets includes a first target and a second target, the acquisition means acquires a first image relating to the first target from a first terminal device used by the first target and acquires a second image relating to the second target from a second terminal device used by the second target, and the authentication means authenticates the first target based on biometric information extracted from the first image and authenticates the second target based on biometric information extracted from the second image.

[0127] (Note 3) The information processing system according to Note 1 or 2, wherein the acquisition means acquires an image relating to one of the multiple targets from a terminal device used by one of the targets, the determination means determines whether or not the image contains foreign matter, and the determination means determines that fraud has occurred if it is determined that the image contains foreign matter.

[0128] (Note 4) The information processing system according to any one of Notes 1 to 3, wherein the acquisition means acquires an image relating to one of the multiple targets from a terminal device used by one of the targets, the determination means determines whether or not the image contains biological information, and the determination means determines that fraud has occurred if it is determined that the image does not contain biological information.

[0129] (Note 5) The information processing system described in any one of Notes 1 to 4, wherein the providing means discontinues the provision of the first service if, while the first service is being provided, the authentication result indicates that authentication has failed for at least one of the multiple targets, or if the determination means determines that fraud is occurring.

[0130] (Note 6) The information processing system described in Note 2, wherein the first terminal device and the second terminal device are head-mounted displays, and the first service is the distribution of content to the head-mounted displays.

[0131] (Note 7) The information processing system according to Note 3, wherein the terminal device is a head-mounted display, and the image is an image captured by a camera for capturing the eyes of the person wearing the head-mounted display.

[0132] (Note 8) The information processing system described in Note 4, wherein the terminal device is a head-mounted display, the image is an image captured by a camera for capturing the eyes of the subject wearing the head-mounted display, and the biological information contained in the image is information relating to the eyes of the subject.

[0133] (Note 9) The information processing system according to any one of Notes 1 to 8, wherein the acquisition means acquires a plurality of images corresponding to each of the plurality of targets when the first service is being provided, the authentication means authenticates each of the plurality of targets based on a plurality of biometric information extracted from each of the plurality of images acquired by the acquisition means when the first service is being provided, the determination means determines whether or not fraud is being committed based on the plurality of images acquired by the acquisition means when the first service is being provided, and the provision means decides whether to continue or discontinue the provision of the first service based on the authentication result by the authentication means and the determination result by the determination means.

[0134] (Note 10) The information processing system described in any one of Notes 1 to 9, wherein the providing means provides the one service when the authentication result indicates that the authentication of all of the multiple targets has been successful and the determination means determines that no fraud has occurred.

[0135] (Note 11) The information processing system described in Note 10, wherein the first service is the distribution of content to head-mounted displays used by each of the multiple targets.

[0136] (Note 12) The information processing system described in Note 11, wherein the content relates to a virtual space on the internet that can be shared by the multiple subjects.

[0137] (Note 13) An information processing method which involves acquiring multiple images corresponding to multiple targets using a single service, authenticating each of the multiple targets based on multiple biometric information extracted from each of the multiple images, determining whether or not fraud has occurred based on the multiple images, and providing the single service based on the authentication result and the determination result.

[0138] (Note 14) A recording medium on which a computer program is recorded that causes a computer to acquire multiple images corresponding to multiple targets that use a single service, authenticate each of the multiple targets based on multiple biometric information extracted from each of the multiple images, determine whether or not fraud has occurred based on the multiple images, and execute an information processing method that provides the single service based on the authentication result and the determination result.

[0139] Furthermore, some or all of the configurations described in Appendices 2 to 12, which are subordinate to Appendice 1 above, may also be subordinate to Appendices 13 and 14, respectively, in the same manner as the subordinate relationships described in Appendices 2 to 12. Moreover, not limited to Appendices 1, 13, and 14, some or all of the configurations described as appendices may also be subordinate to various hardware, software, various recording means for recording software, or systems, without departing from the embodiments described above.

[0140] This disclosure may be modified as appropriate, insofar as it does not contradict the gist or idea of ​​the invention as can be inferred from the claims and the entire specification, and information processing systems, information processing methods and recording media that include such modifications are also included in the technical idea of ​​this disclosure.

[0141] 1. Information Processing System 11. Acquisition Unit 12. Authentication Unit 13. Determination Unit 14. Provision Unit

Claims

1. An information processing system comprising: acquisition means for acquiring multiple images corresponding to multiple targets using a single service; authentication means for authenticating each of the multiple targets based on multiple biometric information extracted from the multiple images; determination means for determining whether or not fraud is occurring based on the multiple images; and provision means for providing the single service based on the authentication result by the authentication means and the determination result by the determination means.

2. The information processing system according to claim 1, wherein the plurality of targets include a first target and a second target, the acquisition means acquires a first image relating to the first target from a first terminal device used by the first target, and acquires a second image relating to the second target from a second terminal device used by the second target, and the authentication means authenticates the first target based on biometric information extracted from the first image, and authenticates the second target based on biometric information extracted from the second image.

3. The information processing system according to claim 1, wherein the acquisition means acquires an image relating to one of the multiple targets from a terminal device used by one of the targets, the determination means determines whether or not the image contains foreign matter, and the determination means determines that fraud has occurred if it is determined that the image contains foreign matter.

4. The information processing system according to claim 1, wherein the acquisition means acquires an image relating to one of the multiple targets from a terminal device used by one of the targets, the determination means determines whether or not the image contains biological information, and the determination means determines that fraud has occurred if it is determined that the image does not contain biological information.

5. The information processing system according to claim 1, wherein the providing means discontinues providing the first service if the authentication result indicates that authentication has failed for at least one of the plurality of targets, or if the determination means determines that fraud has occurred.

6. The information processing system according to claim 2, wherein the first terminal device and the second terminal device are head-mounted displays, and the first service is the distribution of content to the head-mounted displays.

7. The information processing system according to claim 3, wherein the terminal device is a head-mounted display, and the image is an image captured by a camera for capturing the eyes of the person wearing the head-mounted display.

8. The information processing system according to claim 4, wherein the terminal device is a head-mounted display, the image is an image captured by a camera for imaging the eyes of the subject wearing the head-mounted display, and the biological information contained in the image is information relating to the eyes of the subject.

9. The information processing system according to claim 1, wherein the acquisition means acquires a plurality of images corresponding to each of the plurality of targets when the first service is being provided; the authentication means authenticates each of the plurality of targets based on a plurality of biometric information extracted from each of the plurality of images acquired by the acquisition means when the first service is being provided; the determination means determines whether or not fraud is being committed based on the plurality of images acquired by the acquisition means when the first service is being provided; and the provision means decides whether to continue or discontinue the provision of the first service based on the authentication result by the authentication means and the determination result by the determination means.

10. The information processing system according to claim 1, wherein the providing means provides the one service when the authentication result indicates that the authentication of all of the multiple targets has been successful and the determination means determines that no fraud has occurred.

11. The information processing system according to claim 10, wherein the first service is the distribution of content to a head-mounted display used by each of the plurality of targets.

12. The information processing system according to claim 11, wherein the content is content relating to a virtual space on the internet that can be shared by the plurality of objects.

13. An information processing method that acquires multiple images corresponding to multiple targets using a single service, authenticates each of the multiple targets based on multiple biometric information extracted from each of the multiple images, determines whether or not fraud has occurred based on the multiple images, and provides the single service based on the authentication result and the determination result.

14. A recording medium on which a computer program is stored that causes a computer to acquire multiple images corresponding to multiple targets using a single service, authenticate each of the multiple targets based on multiple biometric information extracted from each of the multiple images, determine whether or not fraud has occurred based on the multiple images, and execute an information processing method that provides the single service based on the authentication result and the determination result.

Images