Flexible Wearable Vein Authentication Sensor
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Solution Overview
Problem
Vein authentication technologies face limitations in downsizing and non-contact sensing, making them unsuitable for wearable devices that require user authentication in a contact manner, which hinders convenience and accuracy.
Innovation Solution
A wearable device with a flexible surface light source and a photo panel that allows for contact-based biometric image detection, using infrared or white light projection units to obtain vein, fingerprint, or palm images, enabling secure and efficient authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If non-contact sensing is used for vein authentication, then authentication accuracy is improved, but device size cannot be reduced and contact-based authentication is hindered
Solution Approach 1:
The patent changes the operational parameter from non-contact to contact-based sensing by placing the photo sensor in direct contact with the user's finger. This allows the sensor to detect vein patterns through the skin surface, achieving both contact-based operation and accurate vein authentication without requiring the sensor module to be large.
2Reliability
If image sensor and optical system are used for vein authentication, then authentication capability is achieved, but sensor module size is restricted
Solution Approach 1:
The patent employs a flexible photo sensor that can be placed in direct contact with the user's finger. This flexible thin-film sensor eliminates the need for complex optical systems and large imaging devices, enabling vein authentication with a significantly reduced sensor module size while maintaining reliable authentication capability.
3Measurement precision
If non-contact sensing is used, then vein pattern detection is achieved, but installation on mobile devices and wearables is difficult
Solution Approach 1:
The patent replaces the mechanical non-contact sensing system with a contact-based photoelectric sensing system. The flexible photo sensor detects vein patterns through direct contact with the skin, eliminating the need for precise positioning and distance control, thereby enabling easy installation on mobile devices and wearable equipment.
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
Enables quick, accurate, and convenient biometric authentication in a contact manner, allowing for downsized wearable devices that can perform vein authentication without the need for a predetermined distance, enhancing user experience and security.
Implementation Method 1
a flexible surface light source... at least one or more infrared or white light projection units
Implementation Method 2
a photo panel located on a top surface of the flexible surface light source... detect a first biometric image
Data Source
AI summary
Disclosed are a wearable device and controlling method thereof. The present invention includes a flexible surface light source, a photo panel located on a top surface of the flexible surface light source, and a controller coupled with the flexible surface light source and the photo panel. The controller is configured to detect a first biometric image by controlling the flexible surface light source and identify a user by comparing the detected first biometric image to a second biometric image previously saved in a memory.