| 摘要 |
A user authentication device holds biological information registered for each user and holds user information that is a plurality of kinds of attribute information made correspond to each user. Using the plurality of kinds of attribute information included in the held user information, the user authentication device predicts, on a per-user basis, the possibility that the user requests authentication, and calculates its prediction value. When receiving biological information for an authentication request, the user authentication device compares the received biological information with the biological information of a plurality of users determined by the calculated prediction values and determines, based on the comparison result, whether to authenticate a person who has input the received biological information as a user. |
