Portable Biometric Authentication IC Card for Access Control
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Solution Overview
Problem
Conventional authentication systems for access control devices, such as medical devices, fail to securely verify whether a user has the right to operate the device, as they lack the ability to confirm user authorization beyond biological information management.
Innovation Solution
A portable authentication device, such as an IC card, equipped with a sensor, communication interface, and processor, acquires biological information, communicates with access control devices, and authenticates users by comparing feature information from the sensor data against registered templates, ensuring only authorized users can access the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If biometric authentication is implemented in access control devices, then user identification accuracy is improved, but device complexity increases due to hardware requirements and security management of biological information
Solution Approach 1:
The patent extracts the biometric authentication function from the access control device and relocates it to a portable terminal device. The access control device only retains the simple verification function, while the complex biometric processing (fingerprint acquisition, feature extraction, template comparison) is performed by the portable terminal's processor, thereby reducing device complexity while maintaining identification accuracy
Solution Approach 2:
The portable terminal device acts as an intermediary between the user and the access control device. It mediates the authentication process by handling the complex biometric operations and communicating only the authentication result to the access control device, thus resolving the contradiction between accuracy and complexity
2Adaptability or versatility
If access control devices manage biological information of all registrants, then authentication capability is improved, but security risk increases due to centralized storage of sensitive data
Solution Approach 1:
The patent segments the authentication system into two parts: the portable terminal stores the user's biometric template locally, while the access control device stores only device identification information. This segmentation eliminates the need for centralized storage of sensitive biometric data, reducing security risks while maintaining authentication capability through distributed storage and verification
Solution Approach 2:
The system uses a copy of the biometric template stored in the portable terminal for authentication operations, rather than requiring the original centralized database. The access control device verifies authentication results based on information from the portable terminal, eliminating the need to store or transmit actual biometric data, thus reducing security risks
3Device complexity
If conventional IC cards output only biometric matching results, then device simplicity is maintained, but authorization verification capability deteriorates as they cannot confirm device usage rights
Solution Approach 1:
The patent merges two functions into the portable terminal: biometric authentication and authorization verification. The terminal not only verifies user identity through fingerprint matching but also checks whether the authenticated user has permission to use the specific access control device by comparing device IDs against stored authorization information, thereby enhancing reliability without significantly increasing complexity
Solution Approach 2:
The portable terminal is designed with multi-functionality, serving both as a biometric authentication device and an authorization verification device. It stores both user biometric templates and device authorization information, enabling it to perform both identity verification and permission checking in a single integrated system
Data Source
AI summary
According to one embodiment, an authentication device includes a sensor, a communication interface, a memory and a processor. The sensor acquires biological information. The communication interface communicates with a device. The memory stores feature information of biological information of a registrant for use in biometrics and management information indicating a device which the registrant has a right to use. The processor authenticates whether a user whose biological information has been acquired by the sensor is the registrant having a right to use the device communicated through the communication interface, and transmits a result of the authentication to the device communicated through the communication interface.