Patent ID: 7610492

Claim:
A biometric authentication device comprising: a biometric information storage module storing biometric information; a biometric information authenticating module performing authentication of an individual using present biometric information acquired from the individual when performing individual authentication and the biometric information stored in said biometric information storage module; a mutual authentication module mutually authenticating, before storing the biometric information in said biometric information storage module, validity with a connected processing device for acquiring the biometric information to be stored in said biometric information storage module; a registration counter counted up when the validity with the connected processing device for acquiring the biometric information to be stored in said biometric information storage module is not authenticated in the authentication by said mutual authentication module; an authentication counter counted up when the validity of the individual is not authenticated in the authentication of the individual by said biometric information authenticating module; a stoppage flag set when said registration counter or said authentication counter comes to a predetermined value; and an authentication control module performing control of inhibiting an access to said biometric information storage module when said stoppage flag is set, and of preventing said biometric information authenticating module from executing the authentication process when said stoppage flag is set.