| 摘要 |
A biometric authentication device includes: a biometric information obtain portion obtaining biometric information of a user; a biometric condition determine portion determining good and bad of biometric condition of the user according to the biometric information of the user; a biometric matching portion performing a matching of registered biometric information registered in advance based on the biometric information; an alternate authentication portion performing an authentication based on information that is different from the biometric information; and an alternate authentication control portion switching validation and invalidation of the authentication by the alternate authentication portion according to a determination result of the biometric condition determine portion. A biometric authentication method includes: a biometric information obtain step of obtaining biometric information of a user; a biometric condition determine step of determining good and bad of biometric condition of the user according to the biometric information of the user; a biometric matching step of performing a matching of registered biometric information registered in advance based on the biometric information; an alternate authentication step of performing an authentication based on information that is different from the biometric information; and an alternate authentication control step of switching validation and invalidation of the authentication by the alternate authentication step according to a determination result of the biometric condition determine step. |
