| 摘要 |
A biometric authentication device is provided with a biological information acquisition unit for acquiring biological information relating to a user, a biological state judgment unit for judging, on the basis of the biological information relating to the user, whether the biological state of the user is good or bad, a biological check unit for performing a check against previously registered biological information on the basis of the biological information, an alternative authentication unit for performing authentication on the basis of information different from the biological information, and an alternative authentication control unit for performing switching between validity and invalidity of the authentication performed by the alternative authentication unit according to the result of the judgment by the biological state judgment unit. A biometric authentication method comprises a biological information acquisition step of acquiring biological information relating to a user, a biological state judgment step of judging, on the basis of the biological information relating to the user, whether the biological state of the user is good or bad, a biological check step of performing a check against previously registered biological information on the basis of the biological information, an alternative authentication step of performing authentication on the basis of information different from the biological information, and an alternative authentication control step of performing switching between validity and invalidity of the authentication in the alternative authentication step according to the result of the judgment in the biological state judgment step. |
