| 摘要 |
A user authenticating apparatus in accordance with the present invention stores user information where identification information to identify each of a plurality of users and biometric information of each user are associated with each other, acquires identification information of the user, when the user starts to use a predetermined target, authenticates each user using the acquired identification information and the stored user information, as first authentication, stores the identification information of the user whose first authentication is succeeded as success information, acquires the biometric information of the user, and authenticates each user using the acquired biometric information and the biometric information corresponding to the identification information of the users stored as the success information among the stored biometric information, as second authentication.
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