Fingerprint Vibration Feedback for Detection Accuracy
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Solution Overview
Problem
Fingerprint detection in mobile terminals often incorrectly identifies valid fingerprints if only a small portion of the finger is used for input, leading to inconvenience for users.
Innovation Solution
A system and method that provides vibration notifications based on fingerprint similarity, where the vibration motor's strength is controlled according to the similarity between the input fingerprint and a pre-stored valid fingerprint, outputting maximum vibration when the input is valid, allowing users to adjust their finger position for improved accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the fingerprint detection requires high identical percentage threshold, then the accuracy of fingerprint detection is improved, but the convenience for user operation deteriorates
Solution Approach 1:
The patent implements a feedback mechanism by using vibration motor to provide tactile feedback to the user based on the similarity between input fingerprint and stored fingerprint. The vibration strength varies according to the similarity percentage, giving the user real-time feedback without visually displaying the similarity value, thus improving detection accuracy while maintaining user convenience.
Solution Approach 2:
The patent changes the parameter of vibration strength based on the similarity percentage. Instead of using a fixed threshold for fingerprint validation, the system dynamically adjusts the vibration feedback intensity according to the calculated similarity, allowing the same threshold to work effectively for both high and low similarity cases through differentiated feedback.
2Reliability
If the fingerprint detection uses strict identical percentage threshold, then the reliability of security verification is improved, but the usability for partial finger input deteriorates
Solution Approach 1:
The vibration feedback mechanism provides security verification reliability by maintaining the strict identical percentage threshold while improving usability through tactile guidance. Users who accidentally provide partial finger input receive vibration feedback indicating low similarity, prompting them to adjust their input without compromising security.
Solution Approach 2:
The vibration motor acts as an intermediary between the fingerprint detection system and the user. It translates the similarity calculation result into tactile feedback, mediating the interaction between security requirements and user convenience by providing intuitive guidance without revealing detailed similarity data.
Data Source
AI summary
Disclosed are a method and system for providing vibration notification based on fingerprint similarity. The method comprises: when a fingerprint sensor detects an input of a fingerprint, acquiring information of the inputted fingerprint, comparing the inputted fingerprint with a pre-stored valid fingerprint, and performing computation to obtain a similarity degree between the inputted fingerprint and the valid fingerprint; and controlling, according to the similarity degree, a vibration magnitude of a vibration motor. In the present invention, vibration of a vibration motor is controlled according to a similarity degree between an inputted fingerprint and a valid fingerprint, and the higher the similarity degree, the higher the vibration magnitude. If the inputted fingerprint is determined to be a valid fingerprint, the vibration motor uses the highest power to output vibration.