Fingerprint Authentication Using Dynamic Sliding Image Sequences
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Solution Overview
Problem
Fingerprint imitation technology can cheat fingerprint identification systems by copying fingerprint information, leading to concerns about the accuracy and security of fingerprint authentication.
Innovation Solution
A method and device for fingerprint authentication that includes performing fingerprint image acquisition and comparison in two modes: a first mode for pressing operations and a second mode for sliding operations, extracting static and dynamic features from the fingerprint image sequence to differentiate between real and fake fingers, and providing authentication based on the comparison results.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional fingerprint identification is used, then authentication speed is fast and operation is simple, but security is vulnerable to fingerprint imitation attacks
Solution Approach 1:
The patent transforms the static fingerprint verification process into a dynamic one by introducing sliding operations that capture sequential fingerprint images. The system analyzes dynamic characteristics such as sliding speed, pressure changes, and image sequence continuity, which are difficult for fake fingers to replicate. This dynamic approach enhances security while maintaining operational simplicity through automated analysis.
Solution Approach 2:
The system performs preliminary actions by capturing multiple fingerprint images during the sliding process before final authentication. These preliminary images are used to analyze dynamic characteristics and predict authentication outcomes, allowing the system to enhance security through pre-analysis of sliding behavior patterns.
2Measurement precision
If fingerprint imitation technology is countered, then authentication accuracy improves, but system complexity increases
Solution Approach 1:
The patent adds a temporal dimension to fingerprint verification by capturing images throughout the sliding process. Instead of analyzing a single static image, the system examines the sequence of images over time, analyzing characteristics such as sliding speed variations, pressure changes, and image quality progression. This dimensional expansion significantly improves accuracy in detecting fake fingers while keeping the system structure manageable through software-based analysis.
Solution Approach 2:
The system implements feedback mechanisms by continuously analyzing the fingerprint image sequence during sliding and adjusting authentication decisions based on dynamic characteristics. The system provides real-time feedback on sliding behavior and uses this information to enhance verification accuracy, automatically adapting to detect imitation attempts without increasing physical system complexity.
3Reliability
If sliding operation is added to authentication, then security against fake fingers improves, but operation complexity increases
Solution Approach 1:
The system performs self-service by automatically analyzing the dynamic characteristics of the sliding operation without requiring user intervention. The automated analysis of sliding speed, pressure, and image sequence continuity allows the system to detect fake fingers while maintaining ease of operation, as users simply need to perform the natural sliding motion without understanding the underlying analysis processes.
Data Source
AI summary
A method for fingerprint authentication according to an embodiment of the present disclosure includes, in response to receiving an authentication request, performing fingerprint image acquisition and comparison of a first mode, and selectively performing fingerprint image acquisition and comparison of a second mode, and performing authentication at least based on a comparison result of the first mode. In the first mode, a fingerprint image generated by a pressing operation of a target finger in a fingerprint acquisition area is acquired, and in the second mode, a fingerprint image sequence generated by a sliding operation of the target finger in the fingerprint acquisition area is acquired. A selective fingerprint authentication security mode can be provided as needed, so as to meet various authentication requirements.