Fingerprint Anti-Counterfeiting via Face Image Verification

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Solution Overview

Problem

Existing fingerprint anti-counterfeiting methods are inefficient and prone to security risks due to the difficulty in distinguishing authentic from fake fingerprints, requiring frequent updates and complex analysis, and can be easily bypassed by counterfeiters who create fake fingerprint films.

Innovation Solution

A fingerprint anti-counterfeiting method and device that acquires a fingerprint image and automatically captures a face image under a preset trigger condition, performing face identification using a pre-stored face template to verify the authenticity of the fingerprint, thereby associating fingerprint and face features for unique user identification, making it difficult for counterfeiters to produce both matching images.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If fingerprint image analysis is performed to distinguish authentic from fake fingerprints, then anti-counterfeiting function is achieved, but the method is complex and requires frequent updates of digital difference data

Engineering Contradiction:

Improveanti-counterfeiting effectivenessVSAvoidanalysis complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines fingerprint recognition with face recognition into a unified authentication system. The fingerprint acquisition module and face image acquisition module work together, and the authentication result is determined by both modalities, merging two biometric verification methods to enhance reliability while simplifying the overall authentication logic

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The system pre-stores face templates in the database before authentication is needed. During authentication, the face image is captured and immediately compared against the pre-stored template, eliminating the need for complex real-time analysis and frequent updates of difference data

Inventive Principle:

Principle #10Preliminary action

2Reliability

If fingerprint image analysis is performed to distinguish authentic from fake fingerprints, then anti-counterfeiting function is achieved, but the anti-counterfeiting effect is always later than fake fingerprint implementation

Engineering Contradiction:

Improveanti-counterfeiting effectivenessVSAvoidresponse time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The system performs face image acquisition and fingerprint image acquisition simultaneously or in rapid succession, rather than sequentially analyzing fingerprint images after fake fingerprints are created. The authentication process continues without interruption, comparing both biometric data points in real-time to determine authenticity

Inventive Principle:

Principle #20Continuity of useful action

Solution Approach 2:

Face templates are pre-stored in the database before authentication is needed. During authentication, the captured face image is immediately compared against the pre-stored template, eliminating the need for complex real-time analysis and frequent updates of difference data

Inventive Principle:

Principle #10Preliminary action

3Reliability

If face image acquisition is performed under preset trigger condition, then the probability of counterfeiting is reduced, but the device complexity increases

Engineering Contradiction:

Improvecounterfeiting resistanceVSAvoidsystem structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The authentication device performs multiple functions: it can acquire fingerprint images, acquire face images, store face templates, and perform both fingerprint and face authentication. This multi-functional device reduces the need for separate systems while enhancing security through combined biometric verification

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS11144772B2Method and system for fingerprint security

Publication Date: 2021.10.12 ARMATURA LLC

AI summary

Embodiments of the present invention disclose a fingerprint anti-counterfeiting method and device used for implementing a fingerprint anti-counterfeiting function efficiently. The method in the embodiment of the present invention includes: acquiring a fingerprint image; controlling a camera to acquire a face image under a preset trigger condition; performing face identification on the face image according to a pre-stored face template; and determining the fingerprint image as an authentic fingerprint image when the face identification succeeds. As a fingerprint feature and a face feature of an identical user both can be used for uniquely identifying the user, the fingerprint feature and the face feature of the user can be associated with each other. If face identification performed on a face image according to a preset face module succeeds, it can be determined that an acquired fingerprint image is an authentic fingerprint image. Moreover, the fingerprint anti-counterfeiting device acquires a face image only under a preset trigger condition, thus restricting the degree of participation by a user when the device acquires the face image. As such, the probability of counterfeiting a face image is further reduced, thus achieving a highly efficient fingerprint anti-counterfeiting effect.