Dynamic Biometric Authentication Thresholds for Context-Aware Security
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Solution Overview
Problem
Frequent authentication on communication devices can be redundant, difficult, and time-consuming, especially in situations where the user is likely to be authorized, such as for public safety personnel in emergency situations, and maintaining a constant matching threshold across various contexts can be burdensome.
Innovation Solution
A method and system that determine the use context and authentication status of a communication device to dynamically adjust authentication parameters, including the type of biometric data, time window, matching threshold, and passing threshold, to reduce the need for frequent manual authentication, allowing authorized users to continue using the device without constant re-authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If frequent authentication is required to prevent unauthorized use, then security is improved, but user convenience and time efficiency deteriorate
Solution Approach 1:
The patent implements dynamic authentication by adjusting authentication parameters (matching threshold, time window, biometric template quantity) based on real-time context factors such as location, time of day, and device state. This allows the system to be more lenient when security risk is low and stricter when risk is high, resolving the contradiction between security and convenience.
Solution Approach 2:
The system changes authentication parameters dynamically based on context. The matching threshold, time window duration, and required number of biometric templates are adjusted as parameters based on contextual risk assessment, allowing the system to adapt security levels to match actual threat levels rather than maintaining constant strict authentication.
2Stability of the object's composition
If constant matching threshold is maintained across all contexts, then authentication consistency is improved, but adaptability to different situations deteriorates
Solution Approach 1:
The patent makes the authentication system dynamic by continuously adjusting the matching threshold based on contextual factors. Rather than maintaining a static threshold, the system adapts the threshold level according to real-time assessments of security context, thereby achieving both consistency in the authentication process and adaptability to different situations.
Solution Approach 2:
The system implements parameter changes by modifying the matching threshold value based on contextual risk assessment. When context indicates low risk (e.g., recognized location, normal usage patterns), the threshold is lowered for convenience; when risk is high, the threshold is raised for security, thus achieving both consistency and adaptability.
3Reliability
If multiple biometric templates are required for authentication, then security is improved, but authentication time and complexity increase
Solution Approach 1:
The patent applies partial action by requiring a variable number of biometric templates based on contextual risk assessment. Instead of always requiring the maximum number of templates for authentication, the system adjusts the quantity required based on context, thus maintaining security when needed while reducing authentication time when risk is low.
Solution Approach 2:
The system changes the parameter of required biometric template quantity dynamically. Based on contextual factors such as location, time, and device state, the system adjusts how many biometric templates must be matched for successful authentication, balancing security requirements with time efficiency.
Data Source
AI summary
Method and system for authenticating a session on a communication device. One method includes determining a use context of the communication device and an authentication status of the communication device. The method further includes determining a predetermined period of time based on at least one of the use context and the authentication status. The method further includes generating biometric templates based on at least one of the use context and the authentication status. The method further includes selecting a matching threshold for the biometric templates based on at least one of the use context and the authentication status. The method further includes comparing a match score of each of the biometric templates to the matching threshold to determine a passing amount of biometric templates with match scores that meet or exceed the matching threshold. The method further includes authenticating the session on the communication device.