Biometrics Authentication Guidance Screen Control
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Solution Overview
Problem
Biometrics authentication devices face challenges in guiding freely moving body parts within the image capture range without confusing users, leading to inefficient image capture and authentication processes.
Innovation Solution
A biometrics authentication device with an image capture device, a display device, and a control unit that detects biometrics data, judges image capture success, temporarily stores causes of failure, analyzes these causes, and displays guidance screens based on analysis results to help users adjust their body part position and distance for successful image capture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If image capture is performed frequently to enable rapid authentication, then authentication speed is improved, but the guidance screen changes frequently causing user confusion
Solution Approach 1:
The system performs preliminary analysis of image capture causes and stores them temporarily before displaying guidance. By preparing guidance information in advance based on predicted or previously observed issues, the system reduces the frequency of guidance screen changes during actual authentication, thereby maintaining fast authentication speed while improving user understanding.
Solution Approach 2:
The system implements feedback by analyzing the causes of unsuccessful image captures and using this information to provide targeted guidance. The feedback loop processes image capture results, identifies patterns in failures, and adjusts guidance accordingly, reducing unnecessary screen changes while maintaining high authentication speed through intelligent adaptation.
2Speed
If display switches instantaneously to provide real-time feedback, then responsiveness is improved, but the screen appears flickering causing user confusion
Solution Approach 1:
Instead of instantaneous switching, the system uses periodic action by controlling the display to update at specific intervals or under specific conditions. The guidance screen changes are timed and regulated to avoid flickering, maintaining responsiveness by updating only when necessary while ensuring stable visual presentation for user comprehension.
Solution Approach 2:
The system applies beforehand cushioning by preparing guidance information in advance and buffering display updates. This prevents abrupt instantaneous switching that causes flickering, while still maintaining responsiveness by having ready-to-display guidance that can be shown smoothly when conditions are appropriate.
3Reliability
If multiple image capture operations are performed to ensure successful capture, then capture reliability is improved, but the process takes longer
Solution Approach 1:
The system performs preliminary actions by analyzing potential capture failures and preparing corrective guidance in advance. This allows multiple capture attempts to be coordinated efficiently, reducing redundant time by having pre-prepared guidance ready to immediately correct identified issues and enable successful capture on subsequent attempts.
Solution Approach 2:
The system uses feedback from each image capture attempt to immediately adjust and provide targeted guidance for the next attempt. This feedback-driven approach increases capture reliability by learning from failures while minimizing time loss through intelligent, adaptive guidance that prevents repeated mistakes and accelerates successful capture.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach reduces user confusion, allows for quicker alignment of body parts relative to the sensor, and increases the speed of authentication by providing clear guidance based on the most common causes of unsuccessful image captures.
Implementation Method 1
hemoglobin within the red corpuscles flowing in the veins 112 has lost oxygen. This hemoglobin (reduced hemoglobin) absorbs near-infrared rays at wavelengths near 760 nanometers
Implementation Method 2
The image capture device 100 receives the near-infrared rays reflected from the palm of the hand 110 using a sensor
Data Source
AI summary
In a biometrics authentication device which uses biometrics information to authenticate individuals, guidance is provided such that image capture of biometrics information is performed appropriately. An image capture device is caused to perform a plurality of image capture operations (including distance measurement) at short intervals. And when image capture NG occurs frequently, a control unit stacks the NG results, and if image capture NGs are not resolved even after a prescribed number of image capture operations, judges that the relation between the body part and the image capture device must be corrected, analyzes the stacked image capture NG causes, and displays a guidance screen on a display device according to the analysis result.