Authentication system

摘要

On the basis of information regarding zones in which a plurality of registrants are assumed to be currently located, characteristic data of registrants who are assumed to be in the zone corresponding to a terminal apparatus that read the characteristic data of a user being authenticated is compared the characteristic data of the user being authenticated.

主权项

1. An authentication system comprising:
an obtaining apparatus configured to obtain characteristic data of an object in a current zone; a data managing unit configured to select, from a database, a plurality of first authenticated objects having an assumed current location zone corresponding to the current zone of the object whose characteristic data is obtained by the obtaining apparatus; and an authentication unit configured to perform authentication by comparing the characteristic data of the object whose characteristic data is obtained by the obtaining apparatus with characteristic data of at least one of the plurality of first authenticated objects, wherein, when the authentication unit fails to successfully authenticate based on the comparison of the characteristic data of the object whose characteristic data is obtained by the obtaining apparatus with the characteristic data of at least one of the plurality of first authenticated objects, the data managing unit is further configured to select, from the database, a plurality of second authenticated objects having an assumed previous location zone corresponding to the current zone of the object whose characteristic data is obtained by the obtaining apparatus and a plurality of third authenticated objects having an assumed current location zone corresponding to a zone neighboring the current zone of the object whose characteristic data is obtained by the obtaining apparatus, and the authentication unit is further configured to compare the characteristic data of the object whose characteristic data is obtained by the obtaining apparatus with characteristic data of at least one of the plurality of second authenticated objects and the plurality of third authenticated objects, wherein, when the authentication unit fails to successfully authenticate based on the comparison of the characteristic data of the object whose characteristic data is obtained by the obtaining apparatus with the characteristic data of at least one of the plurality of first authenticated objects, the plurality of second authenticated objects, and the plurality of third authenticated objects, the data managing unit is further configured to select, from the database, a plurality of remaining authenticated objects other than the plurality of first authenticated objects, the plurality of second authenticated objects, and the plurality of third authenticated objects, and the authentication unit is further configured to compare the characteristic data of the object whose characteristic data is obtained by the obtaining apparatus with the characteristic data of at least one of the plurality of remaining authenticated objects, and wherein the data managing unit is further configured to update, in the database, the assumed current location zone and the assumed previous location zone of one of the plurality of first authenticated objects, the plurality of second authenticated objects, and the plurality of third authenticated objects upon successful authentication of the object whose characteristic data is obtained by the obtaining apparatus as one of the plurality of first authenticated objects, the plurality of second authenticated objects, or the plurality of third authenticated objects.