Portable Optical Scanner for Simultaneous Fingerprint and Document Capture
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Solution Overview
Problem
Existing solutions for border control and identification processes require individuals to exit vehicles for fingerprint and document recording, lacking the capability to simultaneously capture multiple fingerprints and documents with a single, portable, and wireless device.
Innovation Solution
A mobile image capture device with a layer body containing a sensor layer and a light-emitting layer, allowing for the optical recording of fingerprints and documents on the same surface using frustrated total internal reflection, coupled with a control unit for image processing and wireless data transmission, enabling cordless operation and integration with external devices for evaluation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a stationary device is used for fingerprint and document recording, then recording accuracy is improved, but mobility is worsened (passengers must exit the vehicle)
Solution Approach 1:
The optical scanner is designed to perform multiple functions: recording fingerprints using frustrated total internal reflection, recording documents through the placement surface, and providing user guidance via display. This multi-functionality allows a single portable device to replace multiple stationary devices, achieving both mobility and recording accuracy.
2Reliability
If separate devices are used for fingerprint and document recording, then device specialization is improved, but device complexity is worsened (multiple devices required)
Solution Approach 1:
The patent combines fingerprint scanning and document scanning capabilities into a single optical scanner with a unified placement surface. The sensor layer and light source are integrated to handle both biometric and document data collection, reducing the number of devices from two to one while maintaining specialized functionality for each recording type.
3Device complexity
If consecutive recording of fingerprints and documents is performed, then device simplicity is improved, but productivity is worsened (sequential processing time)
Solution Approach 1:
The optical scanner enables simultaneous or continuous recording of multiple fingerprints and documents without requiring device repositioning or reconfiguration. The unified placement surface allows operators to record all required data in a single continuous action, eliminating interruptions and improving processing throughput.
4Adaptability or versatility
If multiple placement surfaces are used for fingerprint recording, then recording flexibility is improved, but reliability is worsened (erroneous association of images with fingers)
Solution Approach 1:
The placement surface is segmented into multiple recording zones that can simultaneously capture images of multiple fingers. Each zone is optically independent but part of the same sensor array, allowing simultaneous recording of up to ten fingerprints on one hand while maintaining clear spatial separation and accurate association of each image with its corresponding finger position.
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
Enables secure, efficient, and portable identification by allowing multiple fingerprints and documents to be recorded simultaneously without the need for external power, reducing errors and increasing convenience by allowing identification within vehicles or changing locations.
Implementation Method 1
The at least one area light source is configured to emit light in a first angle range such that light components in the protective layer are internally reflected at the placement surface in order to record skin areas placed on the placement surface using the principle of frustrated total internal reflection
Implementation Method 2
to emit light in a second angle range such that light components illuminate documents placed on the placement surface through the placement surface
Implementation Method 3
a layer body with a sensor layer in which light-sensitive elements are arranged in a two-dimensional regular pixel raster
Data Source
AI summary
An arrangement and method for optical recording of live skin areas of human autopodia and documents has a layer body comprising sensor layer with light-sensitive elements in regular pixel rasters, transparent protective layer above the sensor layer as placement surface for skin areas or documents is integrated in a mobile image capture device having at least one display for user guidance and an internal power supply. The layer body has an area light-emitting layer under the sensor layer to emit light in a first angle range for frustrated total internal reflection at the placement surface when autopodia are placed thereon and to emit in a second angle range to illuminate documents on the placement surface. A controlling and data processing unit handles preprocessing and reducing captured image data and an electronic interface for wireless coupling of the image capture device with a further electronic device for image data processing.