Patent ID: 11755710

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. When a difference between the current feature amount and the template feature amount is within a tolerance value (162), the comparison unit (150) returns processing to the measurement process and the authentication is repeated. When the difference between the current feature amount and the template feature amount is larger than the tolerance value (162), the processing is ended.