Smart Card Biometric Enrollment via Dual-Mode Sensor
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Solution Overview
Problem
Fingerprint sensors on devices with limited user interfaces, such as smart cards and IoT devices, face challenges in providing feedback and obtaining user instructions, making it difficult to enroll fingerprints efficiently and securely.
Innovation Solution
A fingerprint sensor system with a two-dimensional array of sensor elements and a processor that can switch between fingerprint sensing and data input modes, using a data input device with spatially distinct regions to enable user interaction and enrollment of fingerprints without external devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fingerprint sensor is installed on a device with limited user interface (such as smart card or IoT device), then the device can verify user identity securely, but the device cannot provide feedback to user or obtain user instructions for enrollment
Solution Approach 1:
A portable external device serves as an intermediary between the user and the limited-interface device. The external device provides the user interface (display, keyboard, fingerprint sensor) and communicates with the limited device via data transmission connection, enabling enrollment operations without requiring the limited device to have built-in UI capabilities
Solution Approach 2:
The patent combines the fingerprint sensing capability with data input functionality in a unified sensor array. The same sensor elements can detect both fingerprint patterns for biometric verification and pressed keys for data input, eliminating the need for separate input devices and reducing system complexity
2Reliability
If a fingerprint sensor is used on a device with limited user interface, then security is enhanced, but the device complexity increases due to need for external enrollment equipment
Solution Approach 1:
The portable external device is designed to work with multiple different limited-interface devices (smart cards, IoT devices, access control systems). It provides universal enrollment capability through standardized communication protocols, eliminating the need for device-specific enrollment equipment and reducing overall system complexity
Solution Approach 2:
The external portable device contains all necessary enrollment capabilities including display, keyboard, and fingerprint sensor in one self-contained unit. Users can perform enrollment independently without requiring complex configuration or multiple separate components, simplifying the overall system architecture
Data Source
AI summary
Devices, systems, and methods facilitate enrollment of authenticating biometric data for authenticating an authorized user via a biometric sensor. A data input device and a power source are operatively coupled to a smart card including a fingerprint sensor. An activation code input by the user interacting with the data input device is compared with a predefined activation code, and if the detected activation code matches the predefined activation code, a fingerprint template is enrolled from fingerprint data received from the fingerprint sensor, all without transmitting data from either the power source or the data input device to any device other than the smart card.