Fingerprint Template Updating Using Buffered Match Verification
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Solution Overview
Problem
Existing fingerprint template updating methods fail to adequately address the risk of mistakenly updating fingerprints of other individuals, leading to increased mismatch rates and resource inefficiency, while also being hard to implement effectively.
Innovation Solution
A method and device for updating fingerprint templates based on the matching status of previous and subsequent fingerprints, using success rates and similarity measures to determine whether to update templates, with safeguards to prevent mismatched updates and optimize template selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fingerprint templates are dynamically updated using current fingerprints, then user experience is improved by ensuring timely updates, but the risk of mistakenly updating mismatched fingerprints increases
Solution Approach 1:
The system performs preliminary actions by acquiring and buffering a predetermined number of fingerprints before the current fingerprint, then evaluates their matching status in advance. This preliminary evaluation allows the system to determine whether to update the template before finalizing the update, preventing mismatched fingerprint updates while maintaining responsiveness to legitimate fingerprint changes.
Solution Approach 2:
The system implements feedback mechanisms by continuously monitoring the matching status of buffered fingerprints and using this information to dynamically adjust template update decisions. The matching status feedback from multiple fingerprints (both before and after the current fingerprint) is used to verify whether updates should proceed, ensuring that only genuinely matching fingerprints update the template while maintaining real-time adaptability.
2Reliability
If existing methods reduce mismatched fingerprint updates by considering matching status, then security is improved, but implementation complexity and resource consumption increase
Solution Approach 1:
Instead of evaluating all possible fingerprints or using complex multi-stage verification, the system applies partial action by buffering a predetermined number of fingerprints (a specific, limited quantity) and evaluating only their matching status. This approach provides sufficient security against mismatched updates while keeping implementation complexity and resource consumption manageable through defined limits on buffering and evaluation scope.
Data Source
AI summary
A fingerprint template updating method and device is provided. The fingerprint template updating method includes: in response to an acquired current fingerprint matching one of at least one fingerprint template, determining whether to update the at least one fingerprint template using the current fingerprint based on a matching status of a first number of fingerprints acquired prior to the current fingerprint and/or a second number of fingerprints acquired after the current fingerprint.