Patent ID: 7266224

Claim:
A person recognizing apparatus comprising: a biometric information input unit to input biometric information of persons subject to recognition; a registered information memory to store biometric information of persons subject to recognition in advance as registered information; a recognizer to obtain similarities of biometric information input by the biometric information input unit and registered information stored in the registered information memory by collating both of them and recognize the person based on the obtained similarity; and a registered information updating unit to judge whether the similarity obtained by the recognizer is within a prescribed updating range and based on being judged as the similarity is within the prescribed updating range, update the registered information stored in the registered information memory by using the biometric information input by the biometric information input unit, wherein the registered information updating unit comprises: a first registered information updating unit to update the registered information stored in the registered information memory based on the biometric information input by the biometric information input unit when a range to update the registered information for the similarity obtained at the time of recognition in the recognizer are preset, a range not update the registered information and a range to check whether the registered information is to be updated or not and the similarity is in the range to update the registered information, and when the similarity is in the range not to update the registered information, does not update the registered information and when the similarity is in the range to check later whether the registered information is updated, stores the corresponding biometric information input by the biometric information input unit as the history information; and a second registered information updating unit to update the registered information stored in the registered information memory based on the biometric information based on checking the biometric information stored by the first registered information updating unit.