Abstract: A measurement unit (110) performs a measurement process for measuring a biological signal (21) from a target person (20). The biological signal (21) contains a plurality of components and can be measured in a manner to be unnoticeable by the target person (20). A component extraction unit (120) extracts an authentication component, which is to be used for authentication, from the plurality of components. A feature amount extraction unit (130) extracts a current feature amount indicating a present feature amount of the authentication component, from the authentication component. A registration unit (140) registers an identifier, which is used for identifying the target person (20), and a template feature amount, which is a feature amount extracted from the target person (20) in the past, in a storage unit (160), as template information (161). A comparison unit (150) compares the current feature amount to the template feature amount.

Abstract: A signal acquisition unit (21) acquires a biological signal. An authentication information generation unit (22) generates, based on the biological signal acquired by the signal acquisition unit (21), authentication information that differs depending on the individual of a biological body. A part information generation unit (23) generates, based on the biological signal acquired by the signal acquisition unit (21), part information that differs depending on the part from which the biological signal is acquired even in a single individual. An authentication unit (24) performs authentication based on the authentication information generated by the authentication information generation unit (22) and the part information generated by the part information generation unit (23).

Abstract: A measurement unit (110) performs a measurement process for measuring a biological signal (21) from a target person (20). The biological signal (21) contains a plurality of components and can be measured in a manner to be unnoticeable by the target person (20). A component extraction unit (120) extracts an authentication component, which is to be used for authentication, from the plurality of components. A feature amount extraction unit (130) extracts a current feature amount indicating a present feature amount of the authentication component, from the authentication component. A registration unit (140) registers an identifier, which is used for identifying the target person (20), and a template feature amount, which is a feature amount extracted from the target person (20) in the past, in a storage unit (160), as template information (161). A comparison unit (150) compares the current feature amount to the template feature amount.