Sequential Biometric Verification Against Fake Fingerprints

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Solution Overview

Problem

Current fingerprint recognition technologies in security systems are vulnerable to fake fingerprints and do not provide sufficient security for high-level access control, as they rely on a single fingerprint match for authorization.

Innovation Solution

Implement a sequential biometric verification process that requires a predefined sequence of varying biometric inputs, such as fingerprints, facial recognition, or ocular scans, allowing users to choose when to provide additional inputs, and verifies both the correctness and order of these inputs before granting access.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a single fingerprint recognition is used for access control, then the ease of operation is improved, but the security level deteriorates

Engineering Contradiction:
Improveease of operationVSAvoidsecurity level
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent divides the single biometric verification step into multiple sequential biometric input steps. Instead of relying on one fingerprint scan, the system requires a sequence of biometric inputs (e.g., multiple fingerprints, facial recognition, or other biometric modalities) where each input is verified against predetermined criteria. This segmentation transforms a single-point failure system into a multi-layered security architecture, directly resolving the contradiction by maintaining operational simplicity while dramatically improving security reliability.

Inventive Principle:
Principle #1Segmentation

2Reliability

If multiple biometric inputs are required in sequence, then the security level is improved, but the device complexity increases

Engineering Contradiction:
Improvesecurity levelVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent implements a universal biometric verification framework that can accommodate multiple types of biometric inputs (fingerprint, facial recognition, ocular scans, etc.) through a single unified system architecture. The computing device is designed to handle various biometric modalities interchangeably, allowing the system to maintain high security through multiple verification steps without requiring separate dedicated systems for each biometric type. This multi-functionality approach reduces overall device complexity while achieving enhanced security.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent introduces a computing device as an intermediary that coordinates the sequential biometric verification process. This intermediary manages the complexity by centralizing the logic for receiving, validating, and sequencing multiple biometric inputs. Rather than distributing complex verification logic across multiple sensors and processors, the computing device acts as a mediator that simplifies the system architecture while enabling sophisticated multi-step biometric authentication.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Reliability

If a predefined sequence of biometric inputs is required, then the reliability is improved, but the time for verification increases

Engineering Contradiction:
Improvesecurity levelVSAvoidverification time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent applies preliminary action by pre-establishing the sequence of biometric inputs required for verification before the actual authentication process begins. During system setup, the user defines the specific sequence of biometric modalities and criteria that will be required. This preliminary configuration allows the verification system to efficiently process each step without real-time decision-making delays, as the validation criteria are predetermined and ready for immediate comparison against each biometric input in the sequence.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS12455949B2Enhanced sequential biometric verification
Publication Date: 2025.10.28 RESIDEO LLC
  • US12455949B2 patent drawing
  • US12455949B2 patent drawing
  • US12455949B2 patent drawing

AI summary

This disclosure is directed to a sequential biometric verification system and process. A device receives (502) a first biometric input and determines a match with a first predetermined biometric input of a verification sequence. The device provides (504) a first prompt that includes a request for a next biometric input user selection or a complete verification sequence user selection. The device receives the next biometric input user selection in response to the first prompt and a second biometric input, and then determines a match with a second predetermined biometric input of a verification sequence. The device provides a second prompt. The device receives the complete verification sequence user selection in response to the second prompt. Upon determining that at least the first and second biometric inputs (508) and the order of inputs match the predetermined biometric inputs of the verification sequence (510), the device enables receiving a user command.