Personal Authentication Device With Random Fingerprint Pattern
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Solution Overview
Problem
Digital fingerprint sensors used for personal authentication are vulnerable to fraud as they can be easily simulated, with the fingerprint potentially being taken from the device itself or other touched surfaces, lacking robust security measures.
Innovation Solution
A personal authentication device with a surface featuring a unique pattern of peaks and valleys that can be read by a digital fingerprint sensor, designed to be non-corresponding to human fingerprints, generated randomly, and integrated into portable items like cards, key rings, or jewelry, ensuring the pattern is personal and not easily copied.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a digital fingerprint sensor is integrated into a personal device, then authentication functionality is provided, but security is compromised because fingerprints can be easily simulated and copied from device surfaces
Solution Approach 1:
Instead of using the user's actual fingerprint pattern for authentication, the invention uses an artificial pattern that resembles a fingerprint but is deliberately designed not to match any human fingerprint. This inverts the approach by making the authentication element non-human in origin, thereby preventing fingerprint copying fraud while maintaining sensor compatibility
Solution Approach 2:
The invention modifies the fundamental parameter of the fingerprint pattern by creating peaks and valleys with specific geometric characteristics that differ from natural fingerprints. The pattern includes features such as controlled peak/valley dimensions, specific distribution patterns, and multiple cores that are statistically improbable in natural fingerprints, thereby changing the pattern parameters to prevent fraud
2Reliability
If the authentication pattern is designed to not correspond to human fingerprints, then security against impersonation is improved, but compatibility with standard fingerprint sensors may be reduced
Solution Approach 1:
The invention applies local quality by creating specific regions with distinct characteristics: the pattern contains multiple cores (at least two, preferably three) with specific peak and valley structures in certain zones, while maintaining overall fingerprint-like topology. This localized differentiation ensures impersonation resistance while preserving general sensor compatibility
Solution Approach 2:
The invention adds another dimension to the authentication by incorporating multiple cores (typically two or three) instead of the single core found in natural fingerprints. This dimensional change in pattern complexity provides enhanced security while the overall structure remains compatible with standard fingerprint sensor acquisition and processing
3Reliability
If the pattern is generated randomly, then uniqueness and security are enhanced, but manufacturing precision requirements increase
Solution Approach 1:
The invention applies preliminary action by pre-defining the statistical parameters and constraints for random pattern generation before manufacturing. The randomization process operates within predetermined boundaries (peak/valley size ranges, core positions, distribution patterns), ensuring that while each pattern is unique, all patterns meet the required specifications for sensor compatibility and security
Solution Approach 2:
The invention manages manufacturing precision by transforming the random generation process into a controlled parameter space. Instead of completely random patterns, the system generates patterns with controlled parameters (peak diameter, valley depth, core locations, inter-peak distances) that maintain uniqueness while ensuring manufacturability and sensor compatibility through defined parameter ranges
Data Source
AI summary
The invention relates to an authentication device (1), characterized in that it comprises a support (10) provided with a surface (12), said surface comprising a plurality of peaks (14) and valleys (15) forming a pattern (13) capable of being acquired by a digital fingerprint sensor.The invention also relates to a method of manufacturing such a device.