Biometric PIN Entry System for Smart Card Readers
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Solution Overview
Problem
Existing device security methods, such as PIN entry, are vulnerable to interception when the smart card reader lacks a keypad, as the candidate PIN is transmitted multiple times between components, providing opportunities for attackers to intercept the data.
Innovation Solution
Implementing a biometric PIN entry system using a fingerprint sensor in the smart card reader, where each digit of the PIN is associated with a specific finger, reducing the need for explicit digit entry and minimizing transmission points for the PIN.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a candidate PIN is transmitted multiple times between components for verification, then the security verification can be performed, but the opportunities for PIN interception increase
Solution Approach 1:
The patent extracts the PIN entry function from the mobile device and relocates it to the smart card reader through biometric input. The fingerprint sensor is integrated into the smart card reader, allowing the PIN to be generated and transmitted from a single location rather than being typed on the mobile device and transmitted multiple times through various components.
Solution Approach 2:
The biometric data (fingerprint) serves as an intermediary that converts physical finger input into a character sequence (PIN). This intermediary process occurs locally in the smart card reader, reducing the number of transmission points and eliminating the need for the user to manually type the PIN on the mobile device.
2Reliability
If a fingerprint sensor is integrated into the smart card reader for biometric PIN entry, then the security is enhanced and transmission points are minimized, but the device complexity increases
Solution Approach 1:
The smart card reader is enhanced with multi-functionality by integrating a fingerprint sensor, allowing it to perform both card reading and biometric authentication functions. This consolidates security functions into a single device rather than requiring separate biometric input devices.
Solution Approach 2:
The system performs self-service by automatically converting the physical fingerprint input into a character sequence through automated image processing and pattern recognition algorithms. The smart card reader handles the entire biometric authentication process without requiring manual PIN entry by the user.
3Object-affected harmful factors
If biometric data is processed to generate a character sequence, then the number of transmission points is reduced, but the processing time increases
Solution Approach 1:
The system performs preliminary action by capturing and processing the fingerprint image immediately when the user places their finger on the sensor. The biometric data is converted into a character sequence in real-time during the authentication process, eliminating the need for subsequent manual PIN entry and multiple transmissions.
Data Source
AI summary
A device having a biometric input device is configured to allow a user to enter a character sequence for use in validation using the biometric input device. A predetermined assignment of characters to enrolled biometric templates allows a user to determine a sequence of biometric inputs to provide to enter an appropriate character sequence.