Fingertip Sensor Guidance for Biometric Authentication Positioning
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Solution Overview
Problem
Biometric authentication systems fail to accurately detect and correct finger position displacement, particularly rotation and lateral displacement, leading to incorrect authentication and increased processing time.
Innovation Solution
A biometric authentication apparatus equipped with a fingertip sensor on a tip placement surface that detects finger position displacement and a guidance system using lamps to teach the user the correct alignment, ensuring accurate imaging for authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a light emission unit is used to guide finger placement, then the user can recognize the position for placing the finger, but the system cannot detect when the finger is rotated or displaced laterally
Solution Approach 1:
The patent implements a feedback mechanism where the guidance lamp changes its lighting state based on the detected finger position. When the finger is correctly positioned, the lamp indicates this state; when displacement or rotation occurs, the lamp provides corrective guidance. This closed-loop feedback system resolves the contradiction by making the guidance system responsive to actual finger position detection.
Solution Approach 2:
The patent introduces a position detection mechanism as an intermediary between the guidance lamp and the authentication process. This intermediary detects finger position and rotation, communicates this information to the guidance system, and enables the lamp to provide accurate directional guidance. The intermediary resolves the contradiction by bridging the gap between visual guidance and precise position measurement.
2Reliability
If the finger must be precisely positioned for authentication, then accurate biometric data can be obtained, but authentication time increases significantly
Solution Approach 1:
The patent applies preliminary action by guiding the user to correctly position their finger before the actual authentication process begins. The guidance lamp indicates the correct position in advance, and the system detects when proper positioning is achieved, then initiates authentication. This preliminary positioning guidance reduces authentication time by preventing failed attempts while maintaining high accuracy.
Solution Approach 2:
The real-time feedback from the position detection mechanism allows the system to immediately recognize when the finger is correctly positioned and proceed with authentication. This feedback loop eliminates unnecessary waiting time and repeated positioning attempts, thereby reducing overall authentication time while ensuring reliable biometric data capture.
3Measurement precision
If the guidance system provides detailed position feedback, then finger placement accuracy improves, but the device complexity increases
Solution Approach 1:
The patent applies local quality by implementing position detection and guidance specifically at the critical fingertip region where biometric data is captured. Rather than complex system-wide tracking, the solution focuses detection resources on the local area that matters most for authentication accuracy. This localized approach achieves high precision without requiring complex overall system architecture.
Solution Approach 2:
The patent uses a simplified intermediary mechanism that detects finger position and communicates basic directional information to the guidance lamp. Rather than implementing a complex real-time visualization system, the intermediary provides essential position data that drives a relatively simple lamp-based guidance interface. This intermediary approach achieves effective position feedback with minimal added complexity.
Data Source
AI summary
The present invention is a biometric authentication apparatus comprising, a fingertip sensor mounted on a tip placement surface of a tip placement section for placing a tip of a finger cushion said fingertip sensor detecting displacement of an arrangement position of a finger on the tip placement surface of the tip placement section, wherein the biometric authentication apparatus detects the displacement of a position of the tip of the finger cushion.