| 摘要 |
When a biometric authentication is determined to be successful, non-match rate data, which represents a rate of non-match between biometric data acquired from a user and registered biometric data acquired from an authentication card, is compared with update threshold data, which represents a rate of non-match between the biometric data and the registered biometric data that is a standard for updating the registered biometric data acquired from the authentication card. If the non-match rate data is larger than the update threshold data, it is determined that an update is necessary, and the registered biometric data retained at the authentication card is updated on the basis of the acquired biometric data.
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