Biometric Sensor Security Function Energy Optimization
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Solution Overview
Problem
Biometric authentication systems are power-intensive, making them unsuitable for low-power environments and potentially inefficient in resource consumption, especially when continuously verifying user identity.
Innovation Solution
A biometric sensor apparatus that initially performs a security function using biometric parameters and subsequently performs the security function without the biometric sensor after successful verification of subject-dependent parameters, reducing energy consumption by using a weaker biometric signature for ongoing verification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the biometric sensor is used continuously for security functions, then authentication reliability is maintained, but energy consumption increases
Solution Approach 1:
The system performs full biometric authentication periodically or initially, then switches to continuous monitoring of subject-dependent parameters (weaker verification) for ongoing security. This periodic action pattern reduces energy consumption while maintaining authentication reliability through intermittent full verification.
Solution Approach 2:
The system performs a complete biometric authentication in advance to establish baseline security, then uses the verified subject-dependent parameters for subsequent lower-power operations. This preliminary action allows the system to operate in a lower-power state while maintaining security based on the initial verification.
2Reliability
If the biometric sensor is used for every security check, then security strength is maximized, but device complexity increases
Solution Approach 1:
The authentication system is segmented into two distinct components: a full biometric sensor for initial/periodic verification and a simpler subject-dependent parameter detector for continuous monitoring. This segmentation allows the complex biometric sensor to be used less frequently while maintaining security, effectively reducing overall device complexity.
Solution Approach 2:
The system uses a simpler, lower-cost subject-dependent parameter detection mechanism for ongoing security checks instead of continuously deploying the expensive, complex biometric sensor. This approach treats the full biometric verification as a periodic rather than continuous requirement, reducing device complexity.
Data Source
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AI summary
An apparatus comprising: a biometric sensor for sensing one or more biometric parameters of a subject; a detector configured to detect one or more subject-dependent parameters; and a controller configured to initially perform a security function using the biometric sensor and subsequently perform the security function, after successful verification of the one or more detected subject-dependent parameters, without using the biometric sensor.