Multimodal Biometric Authentication with Segmented Comparison Groups
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Solution Overview
Problem
Biometric authentication in electronic devices becomes impractically slow as the number of comparison pieces increases, making it difficult for rapid user authentication in high-traffic areas like airport gates or payment terminals.
Innovation Solution
An electronic device with first and second terminals, each equipped with sensors to detect different types of biometric information, where the controller forms a comparison group using preregistered user information from the first terminal and performs authentication with the second terminal after a predetermined time lapse, allowing for efficient user authentication even with a large number of biometric data points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of biometric information pieces in the comparison group is increased to enhance security, then authentication precision is improved, but authentication time increases significantly
Solution Approach 1:
The patent divides the authentication process into two distinct phases: a first terminal performs initial biometric authentication to identify a subset of candidate user information, and a second terminal performs detailed authentication on this reduced comparison group. This segmentation reduces the overall comparison workload while maintaining security.
Solution Approach 2:
The first terminal performs preliminary authentication using biometric information before the second terminal's detailed authentication. This preliminary action narrows down the comparison group in advance, so that when the second terminal performs high-precision authentication, it only needs to compare against a small subset of candidates rather than the entire database.
2Reliability
If multiple types of biometric sensors are deployed to improve security, then authentication reliability is enhanced, but device complexity increases
Solution Approach 1:
The patent divides the authentication system into two separate terminals, each with specific sensor configurations. The first terminal handles initial biometric screening, while the second terminal performs detailed authentication. This segmentation allows each terminal to be optimized for its specific function, reducing individual device complexity while maintaining overall system reliability.
Solution Approach 2:
The system uses multiple types of biometric sensors (fingerprint, facial recognition, iris, voice) across the two terminals, allowing the authentication system to handle various biometric modalities. This multi-functionality enhances reliability by providing multiple authentication pathways while distributing the complexity across separate terminals rather than requiring one terminal to handle all sensor types.
Data Source
AI summary
An electronic device capable of performing multimodal biometric authentication, where a comparison group is first formed after performing a user authentication with low precision, and then a user authentication is performed with high precision using the formed comparison group, such that the precision of the user authentication and a speed of the user authentication can be both increased.