Biometric Authentication via Partial Fingerprint Stitching
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Solution Overview
Problem
Current biometric authentication methods using fingerprint recognition face limitations in accuracy and security, particularly when using partial fingerprint information from devices with limited fingerprint sensors, which can fail to meet high-security authentication requirements.
Innovation Solution
A method and system that generates combination fingerprint information by stitching partial fingerprint information from multiple sources, allowing for secure authentication by comparing the combined fingerprint with reference fingerprint data stored on a server, thereby enhancing security and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If partial fingerprint information is used for authentication, then convenience and ease of operation are improved, but authentication accuracy and security deteriorate
Solution Approach 1:
The fingerprint sensor area is divided into multiple regions, each capturing partial fingerprint information. Multiple partial fingerprints are obtained from different sensor regions and combined to form complete authentication data, resolving the contradiction between using small sensors for convenience and needing complete fingerprints for accuracy.
Solution Approach 2:
Multiple partial fingerprint information pieces obtained from different sensor regions or multiple sensors are merged and combined to create complete fingerprint data for authentication. This combining process maintains ease of operation with small sensors while achieving the authentication accuracy of complete fingerprint coverage.
2Device complexity
If fingerprint sensor area is reduced, then device size and complexity are reduced, but authentication reliability deteriorates
Solution Approach 1:
The authentication system is segmented to work with multiple small sensor regions instead of requiring one large sensor. Each segment captures partial information that contributes to the overall authentication reliability when combined, allowing device simplification while maintaining security.
Solution Approach 2:
The system changes the parameter of fingerprint data completeness by accepting and combining multiple partial fingerprint sets rather than requiring a single complete fingerprint. This parameter change allows small sensors to achieve the same authentication reliability as large sensors.
3Measurement precision
If multiple partial fingerprints are combined, then authentication accuracy is improved, but processing time and complexity increase
Solution Approach 1:
Partial fingerprint information is preliminarily captured from multiple sensor regions in parallel or pre-positioned, and then combined through processing. This preliminary collection approach reduces the total time required compared to sequential capture, maintaining high accuracy while minimizing processing time loss.
Data Source
AI summary
A method of operating a terminal is provided. The method includes obtaining first partial fingerprint information, obtaining second partial fingerprint information, generating combination fingerprint information based on the first partial fingerprint information and the second partial fingerprint information, transmitting the combination fingerprint information to a server, and receiving an authentication result of the combination fingerprint information from the server.