Sensor Structure for Simultaneous Fingerprint Authentication and Touch Control
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Solution Overview
Problem
Current fingerprint authentication systems fail to detect changes in users over time, leading to unauthorized access when the user changes but is not recognized by the system.
Innovation Solution
Integration of a sensor structure combining fingerprint sensors and touch sensors that allow users to control auxiliary device functions and authenticate their fingerprint simultaneously by moving their finger across the sensor, enabling continuous authentication during input operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fingerprint authentication is performed separately from user input operations, then authentication security is improved, but user operation convenience deteriorates
Solution Approach 1:
The patent combines fingerprint authentication function and auxiliary function control into a single sensor structure. The sensor structure includes both a fingerprint sensor and touch sensors that work simultaneously, allowing users to perform authentication and control device functions through one unified input operation, thus resolving the contradiction between security and convenience
Solution Approach 2:
The sensor structure is designed to perform multiple functions: fingerprint authentication, touch detection, and auxiliary function control. By making the sensor structure universal and multi-functional, the system eliminates the need for separate operations for authentication and control, improving user convenience while maintaining security
2Device complexity
If authentication system assumes user does not change over time, then system simplicity is improved, but authentication reliability deteriorates
Solution Approach 1:
The system continuously monitors touch sensor inputs during user operations and compares them against stored fingerprint templates. This ongoing feedback mechanism detects when the current user differs from the authenticated user, allowing the system to maintain simplicity while improving reliability through continuous verification rather than assuming user identity remains static
Data Source
AI summary
A sensor structure (110) for a device includes both a fingerprint sensor (112) and one or more touch sensors (114). As a user input of the user moving his or her finger across the sensor structure is received, an appropriate auxiliary functionality operation as indicated by the pattern of movement is identified and performed. Additionally, during the same user input the fingerprint sensor senses fingerprint data identifying a fingerprint on the user's finger, and an attempt is made to authenticate the user's fingerprint. Thus, as the user provides a user input by moving his or her finger across the sensor structure, both an attempt is made to authenticate the user's fingerprint based on fingerprint data sensed during the user input and the operation requested by the user input is performed.