Patent ID: 8797140
Filing Date: 2014-08-05
Classification: G06F,G06K

Abstract:
1. A biometric authentication method comprising: storing information corresponding to a plurality of users in association with reference fingerprint image data of each of users and second reference biometric data of the users; obtaining fingerprint image data of a user; determining an image data quality of the obtained fingerprint image data; providing fingerprint authentication by comparison of fingerprint image data with the reference fingerprint image data when the image data quality of the obtained fingerprint image data determined by the determining is not less than a certain threshold level; obtaining second biometric data of the user by inputting second biometric information of the user when the image data quality of the first biometric fingerprint image data determined by the determining is less than the certain threshold level; providing second biometric authentication by comparison of the obtained second biometric data with the stored second reference biometric data of the users; and dividing the users to a first group and a second group based on qualities of the first reference biometric data of the users, qualities of first reference biometric data of users divided to the first group being larger than qualities of first reference biometric data of users divided to the second group; wherein the fingerprint authentication is performed at a higher speed than the second biometric authentication.