Mobile Device Unlocking via Physical Button Code Sequences
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Solution Overview
Problem
Existing mobile device unlocking methods often compromise between security and user friendliness, with biometric scans being prone to errors and code-based methods vulnerable to theft when entered in public.
Innovation Solution
Implementing a system that uses physical input buttons, such as volume control buttons, to detect user actions and change the device's state from locked to unlocked based on valid code sequences, providing a secure and user-friendly method without requiring additional hardware.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If biometric scans (fingerprint, facial recognition) are used for unlocking, then security level is improved, but user friendliness deteriorates due to frequent failures and additional hardware requirements
Solution Approach 1:
The patent extracts the unlocking function from specialized biometric hardware and implements it using existing physical input buttons (volume buttons, power button). This removes the dependency on additional hardware while maintaining security through a code-based input sequence that is entered through familiar tactile buttons, thereby improving user friendliness without sacrificing security.
Solution Approach 2:
The patent makes existing physical input buttons multi-functional by using them for both their original purposes (volume control, power management) and for unlocking the device through a specific code sequence. This universal usage eliminates the need for separate biometric hardware while maintaining security, thus improving ease of operation without additional hardware requirements.
2Ease of operation
If code or password input is used for unlocking, then user friendliness is improved, but security level deteriorates due to vulnerability to theft when entered in public
Solution Approach 1:
The patent uses physical input buttons as an intermediary medium for entering the unlock code. Instead of directly typing on a touchscreen keyboard which is visible to others, the user presses physical buttons that provide tactile feedback without visual exposure. This intermediary approach maintains the simplicity of code-based unlocking while significantly improving security against shoulder-surfing and public observation.
Solution Approach 2:
The patent replaces the visual touchscreen keyboard interface with a mechanical button interface for code input. This substitution eliminates the visual exposure problem inherent in touchscreen keyboards while maintaining the code-based unlocking mechanism, thereby improving security without reducing user friendliness.
3Reliability
If fingerprint scan is used for unlocking, then security level is improved, but ease of operation deteriorates due to requirements for exact finger position and freedom from debris
Solution Approach 1:
The patent extracts the unlocking function from the fingerprint sensor and implements it through physical input buttons. This removes the strict requirements for exact finger positioning and cleanliness that characterize fingerprint scanning, while maintaining security through a code-based system that can be entered flexibly through button presses, thereby improving ease of operation without sacrificing security.
Data Source
AI summary
Systems and methods for controlling access to a mobile device. A method for unlocking a mobile device includes detecting a user input comprising two or more user actions performed at one or more physical input buttons of the mobile device when the mobile device is in a lock state. The lock state prevents use of at least one functionality of the mobile device. Each user action corresponds to a code. The method also includes determining whether the detected user input is valid, and changing a state of the mobile device from the lock state to an unlock state to enable the use of the at least one functionality of the mobile device if the detected user input is valid.