Fingerprint Verification Key Press and Release Cycle
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Solution Overview
Problem
Fingerprint verification systems face issues with deformation due to excessive force and failed verification due to displacement between the finger and the fingerprint verification component, leading to low success rates.
Innovation Solution
The method involves performing fingerprint verification twice during a single pressing operation on the entity key: once when the key is pressed and again when it is raised, using the second verification result as the final result if the first is unsuccessful, thereby improving accuracy and reducing resource wastage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fingerprint verification is performed only when the entity key is pressed, then the verification process is simple and fast, but the success rate is low due to fingerprint deformation from excessive force or displacement between finger and verification component
Solution Approach 1:
The verification process is segmented into two distinct phases: first verification when the key is pressed, and second verification when the key is raised. This segmentation allows the system to capture fingerprint data at two different moments, increasing the probability of successful verification while maintaining a relatively simple overall process structure.
Solution Approach 2:
The first verification is performed as a preliminary action when the key is pressed, and the second verification is prepared in advance as a fallback when the key is raised. This preliminary action structure ensures that if the first verification fails due to deformation or displacement, the system already has a second opportunity ready, thereby improving success rate without significantly increasing complexity.
2Measurement precision
If fingerprint verification is performed twice (when key is pressed and when raised), then the verification accuracy improves, but the processing time and resource consumption increase
Solution Approach 1:
The system performs verification twice, which is an excessive action compared to the conventional single verification. However, this partial redundancy is strategically designed: the second verification is only truly executed if the first fails, making the additional processing time conditional rather than constant. This approach improves accuracy while minimizing the actual time penalty in successful cases.
Solution Approach 2:
The system uses feedback from the first verification result to determine whether to proceed with the second verification. If the first verification succeeds, the process terminates early; if it fails, the system feedbacks the need for a second verification attempt. This feedback mechanism optimizes processing time by avoiding unnecessary second verifications when the first succeeds, while ensuring accuracy when the first fails.
Data Source
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AI summary
The present disclosure relates to a method and device for fingerprint verification, which belong computer technical field. The method includes: performing (101, 202) fingerprint verification in a process during which an entity key provided with a fingerprint verification component is pressed to obtain a first verification result; if the first verification result is a failed verification, performing (102, 203) fingerprint verification in a process during which the entity key is raised to obtain a second verification result; and using (103, 204) the second verification result as a final verification result of present fingerprint verification.