Biometric authentication apparatus and biometric authentication program

Abstract

To provide a biometric authentication apparatus designed for the convenience for a user who uses biometric authentication.SOLUTION: A biometric authentication apparatus includes: a face authentication unit which executes face authentication based on a face image of a user captured by an imaging unit and a face image stored in a storage unit; a vein authentication unit which execute vein authentication based on a vein image of the palm of the user captured by the imaging unit and a vein image stored in the storage unit; an authentication method setting unit which sets at least one of the face authentication and the vein authentication, as a personal authentication method; and a biometric authentication execution unit which executes personal authentication in line with the authentication method set by the authentication method setting unit. The authentication method setting unit sets, when the face image of the user has been stored in the storage unit, face authentication using the face authentication unit as a personal authentication method, and sets, when the face image of the user has not been stored in the storage unit, vein authentication using the vein authentication unit as a personal authentication method.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a biometric authentication technology for authenticating an individual using biometric information. [Background technology]

[0002] Recently, biometric authentication devices that perform personal authentication based on a person's facial image have become known. For example, Patent Document 1 discloses an information processing system that performs personal authentication using a facial image and executes predetermined processing (for example, ticket processing at a concert venue, clock-in / clock-out processing in a time attendance system, etc.) based on the results of the personal authentication. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2022-117117 Summary of the Invention [Problem to be solved by the invention]

[0004] When using facial images for personal authentication, it is necessary to register a facial image (features of the facial image) in advance. In this regard, there are a certain number of people who are not comfortable registering their facial images (features of the facial image) from the perspective of privacy, etc. Also, there are people who do not want facial authentication to be performed based on the state of their face on the day. Furthermore, facial authentication may not be possible if the person is wearing a mask.

[0005] The present invention has been made in view of the above circumstances, and has as its object to provide a biometric authentication device and a biometric authentication program that take into consideration the convenience of users who use biometric authentication. [Means for solving the problem]

[0006] In order to achieve the above object, one aspect of the biometric authentication device according to the present invention is to an imaging unit that images a user; a facial image data storage unit that stores facial image data in which a user is associated with a facial image feature of the user; a vein image data storage unit that stores vein image data in which a user is associated with the characteristics of a vein image of the user's palm; a face authentication unit that performs face authentication based on the face image data stored in the face image data storage unit and the features of the face image of the user captured by the imaging unit; a vein authentication unit that performs vein authentication based on the vein image data stored in the vein image data storage unit and the characteristics of the vein image of the palm of the user captured by the imaging unit; an authentication method setting unit that sets at least one of face authentication performed by the face authentication unit and vein authentication performed by the vein authentication unit as a personal authentication method; a biometric authentication execution unit that executes personal authentication in accordance with the authentication method set by the authentication method setting unit; A biometric authentication device comprising: The authentication method setting unit If the features of the face image of the user captured by the imaging unit are stored in the face image data storage unit, face authentication by the face authentication unit is set as a personal authentication method; If the features of the face image of the user captured by the imaging unit are not stored in the face image data storage unit, vein authentication by the vein authentication unit is set as a personal authentication method. The gist of this is as follows.

[0007] In another aspect, the biometric authentication device according to the present invention comprises: an imaging unit that images a user; a facial image data storage unit that stores facial image data in which a user is associated with a facial image feature of the user; a vein image data storage unit that stores vein image data in which a user is associated with the characteristics of a vein image of the user's palm; a face authentication unit that performs face authentication based on the face image data stored in the face image data storage unit and the features of the face image of the user captured by the imaging unit; a vein authentication unit that performs vein authentication based on the vein image data stored in the vein image data storage unit and the characteristics of the vein image of the palm of the user captured by the imaging unit; an authentication method setting unit that sets at least one of face authentication performed by the face authentication unit and vein authentication performed by the vein authentication unit as a personal authentication method; a biometric authentication execution unit that executes personal authentication in accordance with the authentication method set by the authentication method setting unit; an input unit; A biometric authentication device comprising: the authentication method setting unit sets a personal authentication method based on the information input via the input unit. The gist of this is as follows. [Effects of the Invention]

[0008] According to the present invention, it is possible to provide a biometric authentication technique that takes into consideration the convenience of users who use biometric authentication. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a schematic configuration diagram of a biometric authentication device according to an embodiment of the present invention. [Figure 2] 1 is an external view of a biometric authentication device according to an embodiment of the present invention; [Figure 3] 1 is a schematic diagram illustrating a case where a biometric authentication device according to an embodiment of the present invention is applied to a smart lock system. [Figure 4] 1 is a table showing biometric authentication patterns of the biometric authentication device according to the embodiment of the present invention. [Figure 5] 1A is a flowchart showing the processing flow when a biometric authentication device according to an embodiment of the present invention performs personal authentication, and FIG. 1B is a flowchart showing the processing flow of pattern 2 biometric authentication processing according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0011] <Biometric authentication device configuration> FIG. 1 is a schematic diagram of a biometric authentication device 1 according to an embodiment of the present invention. The biometric authentication device 1 is a so-called multimodal biometric authentication device that performs personal authentication of a user using multiple biometric factors. The multimodal biometric authentication according to this embodiment is a dual biometric authentication method that combines face authentication based on a face image captured by an imaging unit and vein authentication based on a palm image captured by the imaging unit. The reason for combining face authentication and vein authentication is as follows. First, the authentication process of this embodiment is based on contactless face authentication, and consideration is given to combining face authentication with other biometric factors. In this regard, if a biometric factor is located on or near the face, it may be hidden by a bandage or other injury, and both biometric authentication methods may not function. Therefore, this embodiment employs a biometric factor on the hand that is physically separated from the face. Furthermore, since fingerprint authentication is generally contact-based, we have adopted vein authentication, which is hygienic, contactless, and highly accurate. Note that vein authentication in this embodiment is capable of authentication at a distance of approximately 20 cm.

[0012] FIG. 2 shows an example of the appearance of the biometric authentication device 1. As shown in FIG. 2, the biometric authentication device 1 is a compact device (specifically, 8 cm × 8 cm) equipped with both facial authentication and vein authentication functions in a single housing, making it easy to carry and install. Furthermore, the biometric authentication device 1 is equipped with a communication unit capable of communicating with an external device, enabling it to transmit a control signal corresponding to the biometric authentication result to the external device. FIG. 3 is a schematic diagram of a smart lock system in which the authentication result obtained by the biometric authentication device 1 is applied to door unlocking control. In this smart lock system, the biometric authentication device 1, installed on a wall near the entrance, is configured to transmit a control signal to unlock the door if facial authentication and / or vein authentication is successful, thereby preventing the risk of impersonation due to loss of a card key or leak of a personal identification number.

[0013] The biometric authentication device 1 can be set to five authentication patterns by an administrator. Fig. 4 is a table showing the five authentication patterns that can be performed by the biometric authentication device 1. As a prerequisite, at least either face image data (feature data) or palm image data (feature data) must be registered in the biometric authentication device 1 in advance.

[0014] Biometric authentication pattern 1 (hereinafter abbreviated as pattern 1) is an authentication pattern in which both face authentication and vein authentication are performed. In pattern 1, personal authentication is determined to be successful if both face authentication and vein authentication are successful. Pattern 1 is an authentication pattern set when higher accuracy is required. The authentication rate of face authentication is generally said to be 99%, not 100%. For example, in the case of identical twin users, there is a high possibility of incorrect authentication if face authentication is used, so by adding vein authentication, the reliability of personal authentication of the user can be improved. In this embodiment, when pattern 1 is set, face authentication is performed first, followed by vein authentication, but this may be reversed. Furthermore, the administrator may be able to set the execution order of the two biometric authentications.

[0015] Biometric authentication pattern 2 (hereinafter referred to as pattern 2) is an authentication pattern that prioritizes facial recognition and secondary vein recognition, and personal authentication is determined to be successful if either biometric authentication is successful. In pattern 2, facial recognition is performed first, and if facial recognition is unsuccessful, vein recognition is performed. Here, unsuccessful facial recognition includes not only cases where facial recognition is unsuccessful because the facial image data (feature data) does not match the pre-registered facial image data, but also cases where facial recognition cannot be performed because facial image data (feature data) has not been pre-registered. Pattern 2 is an authentication pattern that, in principle, performs personal authentication using facial recognition alone, taking into account the speed of the authentication process. However, it is anticipated that, for example, some users may refuse facial recognition, or facial recognition may be impossible due to wearing a mask, etc., and in preparation for such cases, personal authentication can be performed using vein recognition.

[0016] Note that performing biometric authentication in the order of face authentication first and then vein authentication in Pattern 2 is equivalent to performing personal authentication using face authentication when it is determined that the user's face image data (feature data) is in the biometric authentication device 1, and performing personal authentication using vein authentication when the user's face image data (feature data) is not in the biometric authentication device 1.

[0017] Biometric authentication pattern 3 (hereinafter referred to as pattern 3) uses vein authentication as the primary authentication and facial authentication as the secondary authentication, and determines that personal authentication is successful if either biometric authentication is successful. In pattern 3, vein authentication is performed first, and if vein authentication is unsuccessful, facial authentication is performed. Unsuccessful vein authentication includes not only cases where vein authentication is unsuccessful because the vein data (feature data) does not match the pre-registered vein data (feature data), but also cases where vein authentication cannot be performed because palm vein data (feature data) has not been pre-registered. Pattern 3 is an authentication pattern that, in principle, performs personal authentication using vein authentication alone, taking into account the speed and accuracy of the authentication process. However, it is anticipated that some users may not have palm vein data (feature data) registered, or may be unable to capture an image of their palm veins due to hand injury, etc. In such cases, personal authentication can be performed using facial recognition.

[0018] Note that performing biometric authentication in the order of first vein authentication and then vein authentication as in Pattern 3 is equivalent to performing personal authentication using vein authentication when it is determined that palm vein data (feature data) is in the biometric authentication device 1, and performing personal authentication using face authentication when the user's palm vein data (feature data) is not in the biometric authentication device 1.

[0019] Biometric authentication pattern 4 (hereinafter abbreviated as pattern 4) performs only face authentication, and determines that personal authentication has been successful if face authentication is successful.

[0020] Biometric authentication pattern 5 (hereinafter abbreviated as pattern 5) performs only vein authentication, and determines that personal authentication is successful if vein authentication is successful. Note that pattern 4 and pattern 5 are preferably set not when the biometric authentication device 1 is used as a standalone device, but when two or more biometric authentication devices 1 are combined to form a biometric authentication system (see other modified examples of combinations of biometric authentication devices described later).

[0021] As described above, the biometric authentication device 1 according to this embodiment is a biometric authentication device that can switch between multimodal biometric authentication and single-modal biometric authentication depending on the application, and can determine the priority order of the two biometric authentications.

[0022] As shown in detail in FIG. 1, the biometric authentication device 1 includes an imaging unit 11, an input unit 12, an output unit 13, a communication unit 14, a storage unit 15, and a control unit 16.

[0023] The imaging unit 11 is configured with, for example, a face authentication camera 101a (RGB-IR camera) and a vein authentication camera 101b (see FIG. 2), and captures an image of the user. The light source 102 includes a face authentication LED 102a and a vein authentication infrared LED.

[0024] The input unit 12 is a device for inputting information, and is configured, for example, with a touch panel, a microphone, etc. In this embodiment, an authentication pattern can be set via the input unit 12.

[0025] The output unit 13 is a device that outputs information, and is configured, for example, with a liquid crystal display (see FIG. 2), a speaker, etc. In this embodiment, for example, as shown in FIG. 2, information such as a face image or palm image (not shown) of the user, determination information indicating the authentication result (e.g., authentication successful, authentication failed, etc.), information indicating the imaged part (e.g., face will be photographed, palm will be photographed, etc.), and instruction information prompting the user to present the imaged part (e.g., please face the device, please hold your palm close over, etc.) is displayed on the liquid crystal display or output from the speaker.

[0026] The communication unit 14 enables communication with a controllable external device using the result of biometric authentication. The communication method with the external device is not particularly limited, and may be either wired or wireless. For example, communication with the external device may be possible via a short-range wireless communication network such as Bluetooth (registered trademark).

[0027] The storage unit 15 is configured by, for example, a memory, a hard disk, etc. The storage unit 15 of this embodiment stores user's face image data 21, user's palm vein data 22, an application program 23 for the biometric authentication device 1 to execute processes related to biometric authentication (such as biometric authentication processing and control signal output processing, which will be described later), etc.

[0028] Here, the facial image data 21 is data on the feature amounts of a facial image, but is not data on the facial image itself. The palm vein data 22 is data on the feature amounts of a palm vein pattern, but is not data on the palm vein image itself. In this embodiment, it is assumed that at least one of the facial image data 21 and palm vein data 22 of the user is registered in the storage unit 15 in advance.

[0029] In addition to being stored in the above-mentioned storage unit 15, the application program 23 can also be recorded on a computer-readable recording medium such as an external hard disk, a flexible disk, a CD (Compact Disc), a DVD (Digital Versatile Disc), or a BD (Blu-ray (registered trademark) Disc), or can be distributed via a communication network.

[0030] The control unit 16 is composed of, for example, a CPU, a memory, etc. By executing an application program 23, the control unit 16 controls the storage unit 15, transfers various data, performs various calculations, temporarily stores data, etc., and executes processes related to biometric authentication.

[0031] More specifically, the control unit 16 includes an authentication method setting unit 24, a face authentication unit 25, a vein authentication unit 26, a biometric authentication execution unit 27, a message output control unit 28, and an external device control unit 29.

[0032] The authentication method setting unit 24 sets an authentication pattern input by the administrator via the input unit 11. In this embodiment, one of the authentication patterns from pattern 1 to pattern 5 is set.

[0033] It should be noted that the method for setting the authentication pattern in the authentication method setting unit 24 is not limited to this. For example, a specific authentication pattern may be set in advance in the application program 23. In this case, the specific authentication pattern set in the application program 23 is adopted as is. For example, specifically, an algorithm for executing biometric authentication of pattern 2 may be incorporated into the application program 23. When the use of the biometric authentication device 1 is specified, it is not necessary to leave the setting of the authentication method to an administrator, thereby reducing the workload of the administrator.

[0034] The face authentication unit 25 executes a face authentication process to authenticate a person by comparing the data of the face image captured by the imaging unit 11 with the face image data 21 registered in the memory unit 15 and determining whether the features match.

[0035] The vein authentication unit 26 executes a vein authentication process for authenticating an individual by comparing the palm vein data captured by the imaging unit 11 with the vein data 22 registered in the storage unit 15 and determining whether or not the features match.

[0036] The biometric authentication execution unit 27 executes face authentication processing by the face authentication unit 25 and / or vein authentication processing by the vein authentication unit 26 based on the biometric authentication pattern set in the authentication method setting unit 24.

[0037] The message output control unit 28 outputs a message notifying the authentication result and authentication method of the face authentication process and / or vein authentication process to the output unit 13. For example, text indicating the authentication result such as "Authentication successful" or "Authentication failed" may be displayed on the liquid crystal display, or an authentication result sound such as "Authentication successful" or "Authentication failed" may be output from the speaker. Furthermore, text such as "Please face your face towards the camera (device)," "Please bring your palm close to the camera (device)," or "Please hold your palm over the camera (device)" may be displayed on the liquid crystal display, or a sound such as "Please face your face towards the camera (device)," "Please bring your palm close to the camera (device)," or "Please hold your palm over the camera (device)" may be output from the speaker.

[0038] If the personal authentication is successful as a result of the face authentication process and / or the vein authentication process, the external device control unit 29 transmits a control signal for controlling the external device to the external device (see FIG. 3).

[0039] <Biometric authentication device operation> Next, the operation of the biometric authentication device 1 will be described with reference to Fig. 5. Fig. 5(a) is a flowchart showing the process flow when the biometric authentication device 1 performs personal authentication. As shown in Fig. 5(a), the biometric authentication device 1 executes a biometric authentication process (step S10), and then receives the authentication result of the biometric authentication process and executes a control signal output process (step S20). For example, if the authentication result of the biometric authentication process is successful, it transmits a control signal to the external device. This allows the external device to execute a predetermined desired operation.

[0040] FIG. 5B is a flowchart showing the flow of the biometric authentication process when the biometric authentication process of pattern 2 is executed.

[0041] The biometric authentication device 1 acquires a facial image captured by the imaging unit 11 (step S110), compares feature data of the acquired facial image with feature data of a facial image stored in the storage unit 15, and if the two feature data match (step S120: YES), that is, if the feature data of the captured facial image exists in the storage unit 15 (step S120: YES), performs personal authentication by facial authentication and determines that authentication is successful (step S130). On the other hand, the biometric authentication device 1 compares the feature data of the acquired facial image with the feature data of the facial image stored in the storage unit 15, and if the two feature data do not match (step S120: NO), that is, if the feature data of the captured facial image does not exist in the storage unit 15 (step S120: NO), performs personal authentication by vein authentication (step S140). In vein authentication, an image of the palm is captured by the imaging unit 11, and the feature data of the captured palm vein image is compared with the vein feature data stored in the memory unit 15. If the two feature data match, it is determined that authentication has been successful, and if the two feature data do not match, it is determined that authentication has failed.

[0042] In addition, if the feature data of the captured facial image does not exist in the memory unit 11 (step S120: NO), a message instructing the user to bring their palm closer to the imaging unit 11 may be output via the LCD display or speaker to prompt the user to bring their palm closer to the imaging unit 11 and hold it over it.

[0043] Furthermore, when performing the biometric authentication process of pattern 2, it is assumed that it is widely known that face authentication is used for personal authentication, so even if a user approaches the biometric authentication device 1, no particular message (for example, a message such as "Please turn your face towards the imaging unit 11") is output, but a separate message may also be output.

[0044] <Other variations> Biometric authentication device combination The biometric authentication device 1 of the above embodiment may be used for personal authentication alone, or two or more biometric authentication devices 1 may be combined for personal authentication. For example, when used for entering and exiting a specific facility or public transportation vehicle, facial authentication may be performed upon entry and vein authentication may be performed upon exit. That is, when a user enters, the biometric authentication device 1 may perform personal authentication using pattern 4, and when the user exits, the biometric authentication device 1 may perform personal authentication using pattern 5. More specifically, when installed on a transportation vehicle with different entrances and exits, such as a bus or streetcar, personal authentication may be performed using facial authentication using the biometric authentication device 1 of pattern 4 at the entrance (when boarding), and using vein authentication using the biometric authentication device 1 of pattern 5 at the exit (when disembarking). While it is possible to acquire a facial image of each user at the entrance, it is difficult to acquire an individual facial image at the exit due to operational reasons (because the facial images of other users would be captured together). Therefore, palm vein authentication is used to enable personal authentication at the exit (when disembarking).

[0045] In this way, the biometric authentication device 1 of the above embodiment can be used as a personal authentication system that combines biometric authentication devices 1 with different authentication patterns. When multiple biometric authentication devices 1 are installed in one infrastructure and the environment or situation for personal authentication differs depending on the installation location, combining biometric authentication devices 1 with different authentication patterns can flexibly accommodate different environments and situations.

[0046] As described above, the biometric authentication device 1 of this embodiment includes the imaging unit 11 that images a user, a face image data storage unit (storage unit 15) that stores face image data 21 that associates a user with features of the user's face image, a vein image data storage unit (storage unit 15) that stores vein image data 22 that associates a user with features of the vein image of the user's palm, a face authentication unit 25 that performs face authentication based on the face image data 21 stored in the face image data storage unit and the features of the user's face image captured by the imaging unit 11, a vein authentication unit 26 that performs vein authentication based on the vein image data 22 stored in the vein image data storage unit and the features of the vein image of the user's palm captured by the imaging unit 11, and the face authentication unit 27. and a biometric authentication execution unit 27 that executes personal authentication in accordance with the authentication method set by the authentication method setting unit 24, wherein the authentication method setting unit 27 sets face authentication using the face authentication unit 25 as the personal authentication method when the features of the face image of the user captured by the imaging unit 11 are stored in the face image data storage unit, and sets vein authentication using the vein authentication unit 26 as the personal authentication method when the features of the face image of the user captured by the imaging unit 11 are not stored in the face image data storage unit.

[0047] By adopting such a configuration, the biometric authentication device 1 of this embodiment can perform biometric authentication that is based on face authentication but takes into consideration the convenience of the user who uses the biometric authentication. For example, vein authentication can be performed for users who are reluctant to register their face images (features of face images) from the viewpoint of privacy, or for patients who are required to wear masks in medical facilities or nursing homes, thereby improving convenience.

[0048] The biometric authentication device 1 of this embodiment includes an imaging unit 11 that images a user, a face image data storage unit (storage unit 15) that stores face image data 21 that associates a user with features of the user's face image, a vein image data storage unit (storage unit 15) that stores vein image data 22 that associates a user with features of a vein image of the user's palm, a face authentication unit 25 that performs face authentication based on the face image data 21 stored in the face image data storage unit and the features of the user's face image captured by the imaging unit 11, and a face authentication unit 26 that performs face authentication based on the vein image data 22 stored in the vein image data storage unit and the features of the user's face image captured by the imaging unit 11. a vein authentication unit (26) that performs vein authentication based on the characteristics of a vein image of the palm of a user captured by a unit (11); an authentication method setting unit (24) that sets at least one of face authentication performed by a face authentication unit (25) and vein authentication performed by the vein authentication unit (26) as a personal authentication method; a biometric authentication execution unit (27) that performs personal authentication in accordance with the authentication method set by the authentication method setting unit (24); and an input unit (12), wherein the authentication method setting unit (24) sets the personal authentication method based on information input via the input unit (12).

[0049] By adopting such a configuration, the biometric authentication device 1 of this embodiment can perform biometric authentication that reflects the environment and situation of the side performing the biometric authentication, as well as the required authentication accuracy, while taking into consideration the convenience of the user who uses the biometric authentication.

[0050] It is also possible to construct a biometric authentication system that combines multiple biometric authentication devices 1 with such a configuration. When the environment or situation of the installation location varies, it becomes possible to flexibly respond to the environment or situation of the installation location by combining biometric authentication devices 1 with different authentication patterns.

[0051] Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications and changes can be made to the embodiments of the present invention, and combinations of the embodiments of the present invention can be made without departing from the gist of the present invention, and such modifications, changes, and combinations are also included in the technical scope of the present invention. Furthermore, the functions and effects described in the embodiments of the invention are merely a list of the most preferable functions and effects resulting from the present invention, and the functions and effects of the present invention are not limited to those described in the embodiments of the present invention. [Explanation of symbols]

[0052] 1 Biometric authentication device 11 Imaging unit 12 Input section 13 Output section 14 Communications Department 15 Storage section 16 Control Unit 21 Facial image data 22 Vein data 23 Application Programs 24 Authentication method setting section 25 Face Recognition Unit 26 Vein authentication unit 27 Biometric authentication execution unit 28 Message output control section 29 External device control section

Claims

1. an imaging unit that images a user; a facial image data storage unit that stores facial image data in which a user is associated with a facial image feature of the user; a vein image data storage unit that stores vein image data in which a user is associated with the characteristics of a vein image of the user's palm; a face authentication unit that performs face authentication based on the face image data stored in the face image data storage unit and the features of the face image of the user captured by the imaging unit; a vein authentication unit that performs vein authentication based on the vein image data stored in the vein image data storage unit and the characteristics of the vein image of the palm of the user captured by the imaging unit; an authentication method setting unit that sets at least one of face authentication performed by the face authentication unit and vein authentication performed by the vein authentication unit as a personal authentication method; a biometric authentication execution unit that executes personal authentication in accordance with the authentication method set by the authentication method setting unit; A biometric authentication device comprising: The authentication method setting unit If the features of the face image of the user captured by the imaging unit are stored in the face image data storage unit, face authentication by the face authentication unit is set as a personal authentication method; If the features of the face image of the user captured by the imaging unit are not stored in the face image data storage unit, vein authentication by the vein authentication unit is set as a personal authentication method. A biometric authentication device characterized by:

2. an output unit; an output control unit that outputs a message to the output unit to instruct the user to hold their palm over the imaging unit when the features of the facial image of the user captured by the imaging unit are not stored in the facial image data storage unit; 2. The biometric authentication device according to claim 1, further comprising:

3. an imaging unit that images a user; a facial image data storage unit that stores facial image data in which a user is associated with a facial image feature of the user; a vein image data storage unit that stores vein image data in which a user is associated with the characteristics of a vein image of the user's palm; a face authentication unit that performs face authentication based on the face image data stored in the face image data storage unit and the features of the face image of the user captured by the imaging unit; a vein authentication unit that performs vein authentication based on the vein image data stored in the vein image data storage unit and the characteristics of the vein image of the palm of the user captured by the imaging unit; an authentication method setting unit that sets at least one of face authentication performed by the face authentication unit and vein authentication performed by the vein authentication unit as a personal authentication method; a biometric authentication execution unit that executes personal authentication in accordance with the authentication method set by the authentication method setting unit; an input unit; A biometric authentication device comprising: the authentication method setting unit sets a personal authentication method based on the information input via the input unit. A biometric authentication device characterized by:

4. an output unit; an output control unit that outputs to the output unit a message indicating a part related to the personal authentication method set by the authentication method setting unit; 4. The biometric authentication device according to claim 3, further comprising:

5. a communication unit capable of mutual communication with an external device; the communication unit transmits a signal for controlling the external device when the personal authentication executed by the biometric authentication execution unit is successful.

5. The biometric authentication device according to claim 1, wherein the biometric authentication device is a biometric authentication device.

6. A biometric authentication program that causes a computer to function as each unit of the biometric authentication device according to any one of claims 1 to 4.

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