Card Authentication Device with Edge Resting Point
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Solution Overview
Problem
Existing authentication documents, such as ID cards and smart cards, often incorporate bulky biometric sensors, leading to uncomfortable ergonomics and increased thickness, which hinders their compactness and usability.
Innovation Solution
An authentication device with compact geometric dimensions that captures images of a skin area from multiple positions, allowing for the composition of an overall image, thereby enabling efficient person authentication without the need for bulky sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bulky biometric sensors are integrated into authentication documents, then authentication functionality is achieved, but the document thickness and ergonomics deteriorate
Solution Approach 1:
The patent extracts the bulky semiconductor sensor from the authentication document and replaces it with a minimal optical component (transparent support element) that remains in the document, while the imaging functionality is moved to a separate compact camera device. This extraction resolves the contradiction by achieving authentication functionality without compromising document thickness and ergonomics.
Solution Approach 2:
The patent replaces the mechanical/electronic semiconductor sensor system with an optical imaging system. Instead of using a bulky capacitive or thermal semiconductor sensor embedded in the card, the solution uses a transparent support element with optical imaging, substituting the mechanical sensor infrastructure with a lighter optical approach that maintains authentication reliability while reducing document thickness.
2Reliability
If multiple image captures are performed to ensure accurate authentication, then authentication reliability is improved, but the time required for authentication increases
Solution Approach 1:
The patent implements periodic action by capturing multiple images at different positions of the skin area and systematically combining them. The controller automatically performs sequential image captures at multiple positions and merges them into a complete authentication image, ensuring high reliability while maintaining efficient processing through structured periodic imaging rather than random repeated captures.
Solution Approach 2:
The patent applies preliminary action by pre-defining multiple capture positions and the combination methodology before authentication begins. The system prepares the multi-position imaging protocol in advance, allowing seamless execution during authentication without real-time decision delays, thus improving reliability through comprehensive coverage while minimizing authentication time through pre-planned efficient capture sequences.
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
The solution allows for efficient person authentication by capturing detailed images of the skin area, even with compactly designed authentication devices, thereby maintaining the ergonomic integrity of the authentication document.
Implementation Method 1
a transparent support (101) for placing a skin area (207) on it; a lighting device (103), which is configured to illuminate the transparent support (101) from behind with an illumination light in order to illuminate the skin area (207)
Implementation Method 2
an image camera (105) for taking a first image of the skin area (207) in the first position on the transparent support (101) and a second image of the skin area (207) in the second position on the transparent support (101)
Data Source
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AI summary
The invention relates to an authentication device (100) for authenticating a person, wherein the authentication device (100) is a card authentication device and has a card body (201), comprising a resting point (101) for placing a skin region (207) of the person thereon, wherein the skin region (207) can be positioned on the resting point (101) in a first position and a second position; an illuminating apparatus (103), which is designed to illuminate the resting point (101) with an illumination light (211) on the back side in order to illuminate the skin region (207) in the first position and in the second position; an image camera (105) for recording a first image recording of the skin region (207) in the first position on the resting point (101) and a second image recording of the skin region (207) in the second position on the resting point (101); and a processor (107), which is designed to authenticate the person on the basis of the first image recording and the second image recording, wherein the resting point (101) is arranged on a side surface or an edge of the card body (201).