Biometric Secure Module Digital Fingerprinting for Accuracy and Security

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Solution Overview

Problem

Existing biometric identification and authorization systems face challenges due to the complex and unstable nature of biometric data, leading to significant calculation requirements and long processing times, as well as inadequate protection of biometric data from unauthorized access.

Innovation Solution

A method using a secure module to digitize biometric data through a digitization algorithm, ranking digital values for proximity, and utilizing these digital values for identification or authorization, while ensuring protection against unauthorized access by storing them securely.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If biometric data is directly stored and compared in biometric identification systems, then identification accuracy is maintained, but processing complexity and calculation requirements increase significantly

Engineering Contradiction:

Improveidentification accuracyVSAvoidprocessing complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent creates a digital copy (fingerprint) of the biometric data that preserves the essential identifying features while simplifying the data structure. This digital fingerprint can be stored and compared without requiring the full complexity of the original biometric data, thus maintaining identification accuracy while reducing processing complexity

Inventive Principle:

Principle #26Copying

Solution Approach 2:

The patent extracts only the essential features from the complete biometric data to create a condensed digital representation. By taking out only the critical identifying characteristics and storing them as simplified digital fingerprints, the system reduces calculation requirements while preserving identification capability

Inventive Principle:

Principle #2Taking out (Extraction)

2Reliability

If biometric data is processed and stored in uncoded form for comparison, then identification reliability is maintained, but security protection against unauthorized access deteriorates

Engineering Contradiction:

Improveidentification reliabilityVSAvoidsecurity vulnerability

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent creates a digital fingerprint copy that is functionally equivalent for identification purposes but cannot be reverse-engineered to reveal the original biometric data. This copy can be securely stored and transmitted without compromising the security of the underlying biometric information

Inventive Principle:

Principle #26Copying

Solution Approach 2:

The digital fingerprint acts as an intermediary between the original biometric data and the identification process. It mediates the identification function while protecting the original biometric data from exposure, allowing reliable identification without direct handling of sensitive biometric information

Inventive Principle:

Principle #24Intermediary (Mediator)

3Measurement precision

If complete biometric data is stored and compared for each identification attempt, then identification accuracy is maintained, but processing time increases

Engineering Contradiction:

Improveidentification accuracyVSAvoidprocessing time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The patent creates a simplified digital copy of biometric data that can be processed much faster than the original complex biometric information. This digital fingerprint enables rapid comparison operations while maintaining the accuracy needed for reliable identification

Inventive Principle:

Principle #26Copying

Solution Approach 2:

The patent transforms the biometric data from its original complex form into a simplified digital representation with different parameters. This parameter transformation reduces the computational complexity of comparison operations, enabling faster processing without sacrificing identification accuracy

Inventive Principle:

Principle #35Parameter changes

4Device complexity

If digital values of limited size are used to replace biometric data, then processing complexity is reduced, but protection of individual identity deteriorates

Engineering Contradiction:

Improveprocessing complexityVSAvoididentity protection

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

The patent creates a digital fingerprint copy that appears simple but actually preserves the essential identifying characteristics needed for accurate identification. This copy provides both processing efficiency and identity protection because it cannot be reverse-engineered to reveal the original biometric data

Inventive Principle:

Principle #26Copying

Data Source

PatentUS8972727B2Method of identification or authorization, and associated system and secure module

Publication Date: 2015.03.03 IDEMIA IDENTITY & SECURITY FRANCE SAS

AI summary

Method of identification or of authorization using a system comprising at least one sensor for acquiring biometric data and one secure module storing a set of digital data obtained starting from a set of respective biometric data by means of a digitization algorithm. According to this method, a biometric data value is obtained, acquired by the sensor; a digital value is obtained by application of the digitization algorithm to the acquired biometric data value; within the secure module, at least some of the digital data from said set of digital data are ranked according to their proximity to the digital value obtained; and a biometric data value is obtained from said set of biometric data by taking into account a position of the corresponding digital data within the ranking.