Biometric Authentication Apparatus with Dynamic Touch Panel Marks
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Solution Overview
Problem
Conventional biometric authentication methods face challenges in accurately capturing biometric information due to individual differences in hand sizes, leading to reduced accuracy and usability, especially when users are forced to maintain uncomfortable postures for imaging.
Innovation Solution
A biometric authentication apparatus and method that displays adjustable marks on a touch panel, allowing users to contact the panel with fingers in a natural posture, with the system detecting hand size and adjusting mark sizes and positions to facilitate accurate biometric data capture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If biometric information is imaged in a contactless manner, then the portability and ease of use are improved, but the quality of acquired biometric information is degraded due to hand movement
Solution Approach 1:
The patent introduces a touch panel as an intermediary between the user and the biometric sensor. The user places their hand on the touch panel, which provides physical stabilization and positioning. This intermediary ensures that the hand remains steady during imaging while still allowing for easy, contact-based operation rather than requiring complex contactless positioning systems.
Solution Approach 2:
The system performs preliminary actions by displaying guide marks on the touch panel before the actual biometric imaging. These marks guide the user to place their hand in the correct position and posture before the sensor captures the biometric data. This preliminary positioning ensures that when imaging occurs, the hand is already stabilized and properly oriented, preventing movement during capture.
2Measurement precision
If fixed positioning is used for biometric imaging, then the quality of biometric information is improved, but the usability is reduced due to difficulty in maintaining stable hand position
Solution Approach 1:
The system dynamically adjusts the display of guide marks on the touch panel based on the detected position of the user's hand. Rather than using fixed, static positioning markers, the guide marks move and adapt to guide the user into the correct position. This dynamic approach makes it easier for users to achieve proper positioning while still ensuring high-quality biometric capture.
Solution Approach 2:
The system provides real-time feedback by detecting the position of the user's hand on the touch panel and adjusting the display of guide marks accordingly. This feedback loop continues until the user's hand is in the correct position for imaging. The feedback mechanism guides users step-by-step to achieve proper positioning without requiring them to maintain difficult postures.
3Productivity
If sequential display of contact positions is used, then the efficiency of acquiring biometric information is improved, but the complexity of the interface increases
Solution Approach 1:
The guidance process is segmented into multiple sequential steps, with different sets of guide marks displayed at different stages. First, coarse positioning marks guide the user to the general area, then finer adjustment marks provide more precise positioning guidance. This segmentation breaks down the complex positioning task into manageable steps, improving efficiency without overwhelming the user with all information at once.
Data Source
AI summary
A biometric authentication apparatus includes: a biometric sensor configured to capture an image of a hand of a user; a touch panel configured to output a contact signal indicating contact positions of fingers of the user in response to the reception of an operation by the fingers of the user; and control circuitry configured to display, on the touch panel, a plurality of marks each of which indicates position at which any of the fingers of the user is intended to come into contact with the touch panel, acquire the contact signal output from the touch panel, and reduce in size one or more marks among the plurality of marks during acquiring biometric information from the image captured by the biometric sensor when the control circuitry detects, in accordance with the contact signal, that the fingers of the user are in contact with the plurality of marks.