Accelerometer-Based Wearable Unlocking via Motion Matching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing mobile terminal device unlocking methods, such as those using wearable devices, can be insecure as they allow unauthorized access when a third party is near the device, and require additional operations like shaking the device, which may not be convenient or secure.
Innovation Solution
A control method that uses acceleration information from sensors in both the mobile terminal device and wearable device to match and verify the motion of the device, allowing secure and simpler unlocking by establishing a predetermined relationship between the acceleration data, thereby reducing the risk of unauthorized access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If Bluetooth communication between wearable device and mobile terminal is used for unlocking, then entry operation can be omitted, but security is compromised as third parties can unlock the device when near it
Solution Approach 1:
The patent replaces Bluetooth wireless communication with accelerometer-based mechanical motion detection. Instead of relying on wireless signals that can be received by third parties, the system uses physical acceleration sensors to detect specific unlocking motions (e.g., shaking patterns), substituting a secure mechanical sensing approach for a vulnerable wireless communication approach.
Solution Approach 2:
The patent introduces acceleration information as an intermediary verification layer between the wearable device and mobile terminal. Rather than directly trusting Bluetooth connection for unlocking, the system uses accelerometer data from both devices as a mediator to verify that the same physical user is present and performing the unlocking action, adding a security checkpoint.
2Reliability
If acceleration information matching is used for unlocking, then security is improved, but device complexity increases due to sensor requirements
Solution Approach 1:
The patent leverages the universal presence of accelerometers in modern smartphones (already required for other functions like step counting, screen orientation, and motion-based gestures). By utilizing this existing sensor for unlocking purposes, the system enhances security without adding dedicated hardware components, thus avoiding increased device complexity.
Solution Approach 2:
The mobile terminal's existing accelerometer serves dual purposes: its original functions plus the new unlocking verification function. The device uses its own built-in sensors to verify unlocking motions, eliminating the need for external security hardware and making the system self-sufficient.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method provides a secure and convenient unlocking process by ensuring that only the authorized user, with the wearable device, can unlock the mobile terminal device by matching acceleration data, thus enhancing security and user experience.
Implementation Method 1
acquiring acceleration information by an acceleration sensor
Data Source
AI summary
A control method executed by an information processing device having a function of wirelessly communicating with a wearable device and locking function of restricting operation of the information processing device, the control method includes acquiring acceleration information by an acceleration sensor; receiving information that is transmitted from the wearable device and relates to acceleration applied to the wearable device; and releasing the lock when the acceleration information acquired by the acceleration sensor matches the information relating to the acceleration.