Multimodal Biometric Authentication with Context-Adaptive Thresholds
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Solution Overview
Problem
Existing electronic devices face challenges in enhancing authentication accuracy and usability through multimodal biometric methods, particularly in varying environmental conditions, as they lack adaptive criteria for determining the relevance of biometric data.
Innovation Solution
An electronic device equipped with first and second biometric sensors, a security module, and a controller that sets a multidimensional variable determination criterion based on context information, including ambient factors, to adjust authentication thresholds dynamically, ensuring accurate and secure user authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If fixed authentication thresholds are used in multimodal biometric authentication, then the authentication process is simple and fast, but authentication accuracy deteriorates in varying environmental conditions
Solution Approach 1:
The patent implements dynamic authentication thresholds that automatically adjust based on environmental context factors such as ambient light, noise, temperature, and device orientation. The security module continuously monitors these context factors and modifies the determination criterion accordingly, transforming the static threshold system into a dynamic one that adapts to varying conditions while maintaining authentication accuracy.
Solution Approach 2:
The patent changes the parameters used for authentication by introducing context information (ambient light, noise, temperature, etc.) that influences the authentication determination. The security module uses these context parameters to dynamically adjust the threshold values, allowing the system to maintain high authentication accuracy across different environmental conditions without requiring manual intervention.
2Reliability
If dynamic context-based thresholds are implemented, then authentication accuracy improves in varying environments, but the determination criterion complexity increases
Solution Approach 1:
The security module performs self-service by automatically monitoring context factors and adjusting authentication thresholds without user intervention. The system autonomously evaluates environmental conditions and modifies the determination criterion accordingly, reducing the perceived complexity for users while maintaining high reliability through adaptive authentication.
Solution Approach 2:
The patent implements a feedback mechanism where the security module continuously monitors context factors (ambient light, noise, temperature, device posture) and uses this feedback to dynamically adjust authentication thresholds. This closed-loop system ensures that the determination criterion remains optimized for current environmental conditions, improving reliability while managing complexity through automated feedback processing.
3Reliability
If multiple biometric sensors and context monitoring are added, then authentication security and accuracy improve, but device resource consumption increases
Solution Approach 1:
The patent applies partial action by selectively activating context monitoring and threshold adjustment based on the specific authentication scenario and environmental conditions. The security module monitors only the most relevant context factors for the current situation rather than continuously tracking all possible parameters, reducing energy consumption while maintaining authentication security and accuracy.
Data Source
AI summary
An electronic device for performing multimodal biometric authentication, includes a first biometric sensor configured to sense first biometric information; a second biometric sensor configured to sense second biometric information; a security module configured to set a multidimensional variable determination criterion including context information at the time of sensing at least one of the first biometric information and the second biometric information, perform a first user authentication by applying the multidimensional variable determination criterion to a matching score for the first biometric information or the second biometric information, and determine whether or not to perform a second user authentication using remaining biometric information based on a result of the first user authentication; and a controller configured to control an operation of the electronic device based on at least one of the result of the first user authentication and a result of the second user authentication carried out by the security module.