Multi-Stage Biometric Authentication Apparatus Reducing False Matches
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Solution Overview
Problem
Biometric authentication systems face issues with false authentication, where users may incorrectly reject themselves or accept others, particularly in systems that rely on secondary verification methods like secret questions, which can be answered correctly by non-target individuals.
Innovation Solution
An authentication apparatus and method that acquires second biometric information post-initial biometric authentication and compares it with pre-registered collation information to perform personal authentication, enhancing accuracy by requiring multiple biometric modalities or specific user actions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If biometric authentication is performed using first biometric information, then personal authentication can be conducted, but false authentication occurs where users may incorrectly reject themselves or accept others
Solution Approach 1:
The authentication process is segmented into multiple independent stages: first biometric authentication using first biometric information, then second biometric authentication using second biometric information obtained from the same instrument. Each stage performs independent verification, and both must succeed for complete authentication. This segmentation divides the single-point-failure biometric system into a multi-point-verification system, reducing false authentication rates.
Solution Approach 2:
The system transitions from single-dimension biometric verification to multi-dimensional verification by acquiring a different type of biometric information (second biometric information) from the same instrument after successful first biometric authentication. This adds another dimension of verification that must be satisfied, moving from one-dimensional to two-dimensional authentication space, thereby improving reliability without requiring additional hardware.
2Reliability
If secret questions are used for verification, then authentication accuracy can be improved, but non-target individuals may answer correctly
Solution Approach 1:
The system replaces the mechanical/question-based verification method with a second biometric authentication mechanism. Instead of asking secret questions that can be guessed or answered by someone with partial knowledge, the system automatically performs biometric verification using second biometric information from the same instrument. This substitution eliminates the vulnerability of secret questions while maintaining automated verification.
3Reliability
If multiple biometric modalities are required, then false authentication rates are reduced, but system complexity increases
Solution Approach 1:
The same instrument is utilized for multiple purposes: it first performs first biometric authentication using first biometric information, then performs second biometric authentication using second biometric information. The instrument serves multiple authentication functions without requiring additional dedicated hardware devices. This multi-functionality approach reduces system complexity while achieving multi-modal biometric verification.
Data Source
AI summary
Provided is an authentication apparatus capable of appropriately performing personal authentication. An authentication apparatus (40) according to the present disclosure includes: an acquisition unit (41) configured to acquire authentication information that is second biometric information of a user who has succeeded in biometric authentication using first biometric information, and is second biometric information capable of being acquired by an instrument that has acquired the first biometric information; a comparison unit (43) configured to compare collation information registered in advance with the authentication information; and an authentication unit (44) configured to perform personal authentication of the user on the basis of a result of the comparison.