Biometrics authentication apparatus, biometrics authentication system, and biometrics authentication method

摘要

A biometrics authentication apparatus acquires biometric information by a biometric information acquisition section and acquires first registered information and second registered information by a registered information acquisition section. The biometrics authentication apparatus generates a comparison score from the first registered information and the biometric information, compares the comparison score and a threshold, and outputs an authentication result, by an authentication section. The biometrics authentication apparatus generates a comparison score for each of combinations of two of the biometric information by which success in authentication is obtained, the first registered information, and the second registered information, evaluates the comparison score, and generates an evaluation result, by a comparison evaluation section. When the biometric information may be good second registered information, the biometrics authentication apparatus treats the biometric information as new second registered information by a replacement section.