Selective Biometric Authentication for Security and User Convenience

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Solution Overview

Problem

Existing authentication methods in mobile devices often fail to balance security and user convenience, particularly in varying environmental conditions, leading to inefficiencies and potential security breaches.

Innovation Solution

A processor-implemented authentication method that selectively performs combined authentication using multiple biometric modalities, determining whether to combine modalities based on specific conditions, including false acceptance rates and user convenience, to enhance security and convenience.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If combined authentication using multiple modalities is always performed, then authentication accuracy and security are improved, but device complexity and processing time increase

Engineering Contradiction:
Improveauthentication accuracyVSAvoidauthentication system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The authentication system dynamically adjusts the authentication method based on environmental conditions and user needs. The processor determines whether to perform single modality or combined modality authentication in real-time, making the system flexible and adaptive rather than static and rigid.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes the authentication parameters (number of modalities, combination types) based on detected environmental conditions such as lighting, noise levels, and sensor availability. This allows the system to optimize between security and complexity by adjusting parameters according to the situation.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If combined authentication using multiple modalities is always performed, then authentication accuracy is improved, but processing time increases

Engineering Contradiction:
Improveauthentication accuracyVSAvoidauthentication processing time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The system dynamically selects the authentication approach based on real-time conditions. When environmental conditions are favorable or security requirements are lower, single modality authentication is performed for faster processing. When conditions warrant higher security, combined modality authentication is activated.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The processor changes the authentication parameter (single vs. combined modality) based on environmental assessments, thereby controlling the processing time while maintaining adequate security levels for each situation.

Inventive Principle:
Principle #35Parameter changes

3Ease of operation

If single modality authentication is used, then processing speed and convenience are improved, but security and authentication accuracy deteriorate

Engineering Contradiction:
Improveuser convenienceVSAvoidauthentication security
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The system transitions between single modality and combined modality authentication dynamically based on environmental conditions and security requirements, providing convenience when appropriate and enhanced security when necessary.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The authentication parameter (modality count) is changed based on environmental assessments, allowing the system to optimize between user convenience and security for each authentication event.

Inventive Principle:
Principle #35Parameter changes

4Reliability

If authentication conditions are made more stringent, then security is improved, but user convenience and accessibility deteriorate

Engineering Contradiction:
Improveauthentication securityVSAvoiduser convenience
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The system dynamically adjusts authentication stringency based on environmental conditions and detected user needs, making authentication easier when conditions permit and more secure when conditions warrant heightened precautions.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS12530443B2Method and apparatus with selective combined authentication
Publication Date: 2026.01.20 SAMSUNG ELECTRONICS CO LTD
  • US12530443B2 patent drawing
  • US12530443B2 patent drawing
  • US12530443B2 patent drawing

AI summary

A method and apparatus with selective combined authentication performs a single authentication based on a first modality among plural modalities, and in response to the single authentication having failed, determines whether to perform a combined authentication by a combination of two or more of the plural modalities, and selectively, depending on a result of the determining of whether to perform the combined authentication, performs the combined authentication.