Patent ID: 7526110

Claim:
A biometric information authentication device comprising: an obtaining section for obtaining biometric information of an authentication object; a first extraction section for extracting first to-be-verified data to be used in a minutia matching method from said biometric information obtained by said obtaining section; a second extraction section for extracting second to-be-verified data to be used in a pattern matching method from said biometric information obtained by said obtaining section; a first verifying section for verifying said first to-be-verified data extracted by said first extraction section against first registration data registered preliminarily using said minutia matching method; a second verifying section for verifying said second to-be-verified data extracted by said second extraction section against second registration data registered preliminarily using said pattern matching method; and a determining section for comparing match degree (hereinafter referred to as first match degree) between said first to-be-verified data and said first registration data, which is obtained as a result of verification by said first verifying section, with a first threshold value provided preliminarily and a second threshold value also provided preliminarily to allow said second verifying section to perform verification in the case where said first match degree is equal to or smaller than said first threshold value and equal to or larger than said second threshold value.