Patent ID: 9019075
Filing Date: 2015-04-28
Classification: G06F,G07C

Abstract:
1. A user authentication device comprising: a first holding unit that holds a plurality of pieces of biometric information, each of the plurality of pieces of the biometric information corresponding to each of a plurality of users; a second holding unit that holds a plurality types of attribute information; an accepting unit that accepts biometric information; a first calculating unit that, for the same user, calculates a plurality of different use probabilities of user authentication by using the plurality types of attribute information held by the second holding unit; a second calculating unit that calculates a matching probability that the accepted biometric information matches the plurality of pieces of biometric information held by the first holding unit; a setting unit that resets the plurality types of attribute information used for calculating the plurality of different use probability when the matching probability calculated by the second calculating unit is less than a predetermined value; and a matching unit that, based on each use probability calculated by the first calculating unit, matches the accepted biometric information against each of the plurality of pieces of the biometric information held by the first holding unit, wherein the setting unit excludes the biometric information for the user of which use efficiency calculated by the second calculating unit is less than the predetermined value, from objects to be matched by the matching unit.