Circular Touch Gesture Unlocking for Secure Terminal Access
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Solution Overview
Problem
Conventional unlocking methods for terminals leave a touch trace on the screen, compromising data security as the unlocking condition can be detected by third parties.
Innovation Solution
An unlocking method and device that detect a touch signal corresponding to a touch movement in a specific direction and number of loops, triggering the terminal to unlock only if the direction and loop count match preset reference values, enhancing security by reducing visible traces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional sliding gesture unlocking is used, then the unlocking operation is simple and easy to perform, but a touch trace is left on the screen that can be detected by third parties, compromising data security
Solution Approach 1:
The patent transforms the static linear sliding gesture into a dynamic circular motion gesture. The user rotates the finger around a center point on the screen, creating a dynamic unlocking pattern that does not leave a linear trace. This dynamic circular motion maintains ease of operation while eliminating the security vulnerability of traditional sliding gestures.
Solution Approach 2:
The patent adds a rotational dimension to the unlocking gesture. Instead of moving the finger in a single dimension (linear slide), the user performs a rotational movement around a center point. This dimensional change from linear to circular motion prevents the creation of detectable traces while preserving operational simplicity.
2Loss of information
If a touch trace is left on the screen during unlocking, then the unlocking condition can be visually detected, but data security of the terminal is compromised
Solution Approach 1:
The patent extracts the essential unlocking verification from the visible trace. Instead of relying on a visible sliding path, the system verifies the rotational gesture by detecting the center point coordinates and rotation angle through touch signal processing. The unlocking condition is determined by computational analysis rather than visual trace detection.
Solution Approach 2:
The patent introduces an intermediary computational process between the physical gesture and the unlocking verification. The touch signal processing system acts as an intermediary that translates the circular motion into coordinate data and angle measurements, preventing direct correlation between the physical gesture and visible traces on the screen.
3Object-affected harmful factors
If the unlocking condition requires passing through specific reference points in a specific order, then security is improved, but the complexity of the unlocking operation increases
Solution Approach 1:
The patent changes the verification parameters from discrete reference point coordinates to continuous rotational parameters (center point coordinates and rotation angle). This parameter transformation simplifies the user operation to a natural circular motion while maintaining security through precise computational verification of the rotational characteristics.
Data Source
AI summary
An unlocking method for use in a terminal having a touch screen, includes: detecting a touch signal corresponding to a touch movement on the screen in a moving direction; and triggering the terminal to enter into an unlocked state, if the moving direction is the same as a preset reference direction and a number of loops of the touch movement corresponding to the touch signal is the same as a preset reference number of loops, wherein the preset reference direction is one of a clockwise direction or an anticlockwise direction.