| CPC G07C 9/37 (2020.01) [G06F 21/32 (2013.01); G06V 40/172 (2022.01); G07C 2209/08 (2013.01)] | 20 Claims |
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1. A biometric authentication apparatus comprising:
a memory storing instructions; and
a processor coupled to the memory and configured to execute the instructions to:
acquire biological information of a person who passes through a gate apparatus;
measure elapsed time from a time of starting operation of the gate apparatus;
perform, until the elapsed time from the time of starting operation of the gate apparatus reaches a predetermined value, biometric authentication on the biological information based on a threshold determined based on a predetermined initial value and the measured elapsed time;
when the elapsed time from the time of starting operation of the gate apparatus reaches the predetermined value, select, from a plurality of types of threshold changing schedules, a threshold changing schedule based on an average value of similarity between the acquired biological information and a reference biological information when authentication is performed successfully;
after the elapsed time from the time of starting operation of the gate apparatus reaches the predetermined value, perform the biometric authentication on the biological information based on the threshold determined based on the selected threshold changing schedule and the measured elapsed time;
receive a request for changing the threshold from a user; and
restrict changing of the threshold to larger than a value determined depending on the measured elapsed time.
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