Biometric Authentication System Using Optical Data Processing

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Solution Overview

Problem

Conventional biometric authentication systems face security risks due to the inability to prevent misuse of physical feature data once it is stolen, as the data remains unchanged and can be easily replicated, lacking measures to secure the data before it is processed.

Innovation Solution

An individual authentication system that applies predetermined processing, such as optical processing or brightness distribution, to physical feature data at the time of acquisition, ensuring that only processed data is used for authentication, making it difficult for unauthorized parties to misuse the data by changing the input conditions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If physical feature data is stored without modification, then authentication can be performed efficiently, but the data can be stolen and misused by third parties

Engineering Contradiction:
Improveauthentication efficiencyVSAvoiddata theft and misuse risk
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent applies preliminary action by modifying physical feature data immediately upon acquisition before storage and authentication. The data is transformed through processing that prevents third-party misuse while maintaining authentication functionality. This resolves the contradiction by preparing the data in advance to be both usable for authentication and resistant to theft/misuse.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent changes the parameters of physical feature data through modification processing. The data is transformed into a modified form that maintains authentication capability but prevents unauthorized use. This parameter transformation resolves the contradiction by creating data that satisfies both authentication efficiency and security requirements.

Inventive Principle:
Principle #35Parameter changes

2Object-affected harmful factors

If modification processing is applied to physical feature data, then third-party misuse is prevented, but the time period for handling unprocessed original data increases

Engineering Contradiction:
Improvethird-party misuse preventionVSAvoiddata handling time
Core Design Contradiction:
Object-affected harmful factorsVSLoss of time

Solution Approach 1:

The patent performs modification processing immediately upon data acquisition, eliminating the time period where unprocessed original data could be exposed. By applying the transformation action at the moment of acquisition rather than later, the patent resolves the contradiction between prevention effectiveness and time loss.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent rushes through the data handling process by applying modification processing directly during acquisition, skipping the intermediate storage phase where unprocessed data would be vulnerable. This rapid transformation resolves the time loss issue while maintaining security.

Inventive Principle:
Principle #21Skipping (Rushing through)

3Reliability

If physical feature data is modified before authentication, then security is enhanced, but the complexity of the authentication system increases

Engineering Contradiction:
ImprovesecurityVSAvoidauthentication system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies parameter changes through modification processing that transforms physical feature data while maintaining authentication compatibility. By carefully selecting transformation parameters that preserve essential authentication characteristics, the patent enhances security without proportionally increasing system complexity.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent creates a modified copy of the physical feature data that serves both authentication and security functions. This copying approach allows the system to maintain the original data's authentication capability while creating a protected version, resolving the contradiction between security enhancement and complexity increase.

Inventive Principle:
Principle #26Copying

Data Source

PatentUS7613333B2Individual authentication system, individual authentication method, and individual authentication program
Publication Date: 2009.11.03 FUJITSU LTD
  • US7613333B2 patent drawing
  • US7613333B2 patent drawing
  • US7613333B2 patent drawing

AI summary

The present invention has been made to provide a technique capable of easily preventing the third party from misusing the data related to an individual physical feature in the case where individual authentication is performed based on the physical feature.An individual authentication system that authenticates an individual based on his or her physical feature comprises an authentication information acquisition section that acquires, at the time of authentication of an individual, information related to a state in which predetermined processing has applied to predetermined physical feature of the individual as authentication information for authentication determination; a registration information acquisition section that acquires the previously registered information related to a state in which predetermined processing has applied to predetermined individual physical feature as registration information for authentication; and an authentication determination section that determines authentication of the authentication information acquired by the authentication information acquisition section based on the registration information acquired by the registration information acquisition section.