Signature Wakeup Method for Electronic Devices
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Solution Overview
Problem
Conventional touch screen-based electronic devices require users to perform two separate operations to wake and unlock the device, which is cumbersome and lacks personal security, as password-based systems do not utilize individual traits.
Innovation Solution
An electronic device with a touch sensor and processing unit that detects a predetermined signature to simultaneously wake and unlock the device by generating touch data and determining its match with a preconfigured gesture, ensuring only authorized users can access the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the touch screen enters a sleep state to save power, then energy consumption is reduced, but the device cannot be accessed and security is compromised
Solution Approach 1:
The system performs preliminary authentication by detecting a signature on the sleep screen before allowing the device to wake up. The touch sensor continuously monitors for a valid signature even when the display is in sleep mode, and only wakes the device after successful authentication, preventing unauthorized access while maintaining power savings
2Reliability
If a password-based security system is used, then security control is improved, but the system lacks personalization and can be accessed by anyone who knows the password
Solution Approach 1:
The system transitions from a uniform password authentication method to a personalized biometric authentication method. Each user has their own unique signature characteristics (pressure, speed, curvature, continuity) that are stored and compared, providing localized personalization for each user while maintaining strong security control
3Reliability
If two separate operations (wake and unlock) are required, then security control is improved, but user operation becomes complicated and time-consuming
Solution Approach 1:
The system merges the wake-up function and unlock function into a single integrated authentication process. When a valid signature is detected on the sleep screen, the system simultaneously wakes the display and unlocks the device, eliminating the need for separate wake and unlock operations while maintaining security
4Ease of operation
If the display is woken before authentication, then user operation is simplified, but security is compromised as someone can peek at the writing
Solution Approach 1:
The system takes preliminary anti-action by keeping the display in sleep mode during the authentication process. The signature is detected and verified on the sleep screen, and only after successful authentication does the system wake the display, preventing anyone from peeking at the authentication input
Data Source
AI summary
An electronic device including a touch sensor and a processing unit is provided. The touch sensor is disposed on or under a display, and generates touch data for a touch detected thereon or therenear when the electronic device is locked with the display in a sleep state. The processing unit determines whether the touch data matches a predetermined signature according to the touch data, and wakes the display from the sleep state and unlocks the electronic device when the touch data matches the predetermined gesture.