Under-Display Fingerprint Sensor Activation via Touch Duration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing fingerprint recognition methods in terminals are inefficient for decrypting functions, as they require manual intervention and have low decryption speed, leading to user inconvenience and potential accidental triggering of functions.
Innovation Solution
A method and device for fingerprint recognition that activates a fingerprint sensor under a display area when a touch operation on a specified function widget lasts for a preset duration, collects fingerprint information, and performs security verification to safely trigger the corresponding function, improving decryption efficiency and preventing accidental activations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If fingerprint sensor is activated immediately upon clicking an icon, then decryption speed is improved, but power consumption increases and accidental triggering may occur
Solution Approach 1:
The system performs preliminary validation by detecting touch duration before activating the fingerprint sensor. The touch operation must exceed a preset duration threshold to trigger sensor activation, which preliminarily filters out accidental short touches and reduces unnecessary sensor activations, thereby lowering power consumption while maintaining fast decryption speed for valid operations.
2Speed
If fingerprint sensor is activated immediately upon clicking an icon, then decryption speed is improved, but accuracy of intentional activation decreases due to accidental triggers
Solution Approach 1:
The system performs preliminary validation by detecting touch duration before activating the fingerprint sensor. The touch operation must exceed a preset duration threshold to trigger sensor activation, which preliminarily filters out accidental short touches and reduces unnecessary sensor activations, thereby lowering power consumption while maintaining fast decryption speed for valid operations.
3Speed
If touch duration threshold is set low, then decryption speed is improved, but accidental function triggers increase
Solution Approach 1:
The system performs preliminary validation by detecting touch duration before activating the fingerprint sensor. The touch operation must exceed a preset duration threshold to trigger sensor activation, which preliminarily filters out accidental short touches and reduces unnecessary sensor activations, thereby lowering power consumption while maintaining fast decryption speed for valid operations.
4Reliability
If multiple verification steps are added, then security is improved, but operation complexity increases
Solution Approach 1:
The system merges the touch duration detection and fingerprint sensor activation into a single integrated process. The touch operation serves dual purposes: both as the activation trigger and as the preliminary security validation. This merging reduces operation complexity by eliminating separate verification steps while maintaining strong security through the combination of duration thresholding and fingerprint recognition.
Data Source
AI summary
A method and device for fingerprint recognition, a terminal, and a storage medium are provided, which belong to the technical field of information processing. The method is applicable to a terminal and includes the following. When a touch operation performed on a specified function widget of a current display interface of the terminal is detected and duration of the touch operation reaches preset duration, a fingerprint sensor disposed under a display area displaying the specified function widget is activated. Fingerprint information entered via the touch operation is collected with the fingerprint sensor. Security verification is performed on the fingerprint information. If the security verification of the fingerprint information passes, a function of the specified function widget is triggered.