Identification Document Barcode for Reliable MRZ Data Capture
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Solution Overview
Problem
Modern identification documents face challenges in reliable data reading from the Machine Readable Zone (MRZ) due to improper placement, rotation, and reflective security features, leading to incomplete or incorrect data capture, which can hinder chip access and verification processes.
Innovation Solution
Incorporating a two-dimensional barcode that duplicates the MRZ data, allowing for secure capture even when the document is not aligned correctly, and reducing the impact of light reflections, with features like digital signing and wavelength-converting properties to enhance readability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the viewing window is made larger to capture the entire MRZ, then the complete data reading is improved, but the antenna guidance and chip reading capability deteriorates
Solution Approach 1:
The patent creates a copy of the MRZ data in a compact barcode format that can be read optically without requiring the document to be precisely positioned. This barcode copy serves as a reliable alternative when the MRZ cannot be fully captured, resolving the contradiction by providing data access through a different representation that doesn't require large viewing area or precise positioning.
Solution Approach 2:
The patent segments the data access function into two parts: the original MRZ for standard reading and a compact barcode as a supplementary reading option. This segmentation allows the system to use the barcode when the MRZ is not fully visible, thereby maintaining chip reading reliability without requiring an enlarged viewing window.
2Manufacturing precision
If the document placement precision is increased to ensure complete MRZ capture, then the data reading completeness is improved, but the ease of operation deteriorates
Solution Approach 1:
The barcode duplicate of MRZ data allows users to place the document casually without precise positioning, as the compact barcode can be detected and read even when the full MRZ is not visible. This eliminates the need for high placement precision while maintaining data reading completeness.
Solution Approach 2:
The patent changes the reading parameter from requiring full MRZ visibility to detecting a compact barcode, which has different spatial requirements. This parameter change in the reading approach allows casual document placement while ensuring complete data capture.
3Reliability
If security features like laminates or holograms are added to the document, then the security is improved, but the MRZ readability deteriorates due to reflections and overexposure
Solution Approach 1:
The patent creates a barcode copy of the MRZ data that is positioned and designed to be readable despite the presence of security features. The barcode can be placed on areas of the document not covered by reflective security elements, or designed with wavelength-converting properties that avoid interference from these features, thereby maintaining readability while preserving security.
Solution Approach 2:
The barcode acts as an intermediary data storage format that bypasses the readability issues caused by security features. Instead of relying on direct optical reading of the MRZ through reflective layers, the system uses the barcode as a mediator that can be read reliably even when the MRZ is obscured by security elements.
4Reliability
If a barcode duplicate of MRZ data is added, then the data capture reliability is improved, but the device complexity increases
Solution Approach 1:
The patent uses a standardized barcode format that can be read by existing optical scanning technology, avoiding the need for complex new reading devices. The barcode is a simple visual pattern that can be detected by standard cameras or scanners, thereby improving data capture reliability without significantly increasing device complexity.
Solution Approach 2:
The barcode design uses universal encoding standards and can be read by multiple types of devices (cameras, scanners, document readers), making the system multi-functional. This universality allows the same barcode structure to serve different purposes and be processed by various devices, minimizing the increase in overall system complexity.
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
The solution enables reliable and automated data capture, reducing errors and facilitating self-service operations, while allowing for secure and efficient access to chip contents, even under unfavorable conditions.
Implementation Method 1
an optical recording device for recording the barcode
Implementation Method 2
features like digital signing and wavelength-converting properties to enhance readability
Data Source
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AI summary
The invention relates to an identification document (100) with data arranged in a machine-readable zone (101), and a barcode (103) which provides a duplicate of the data arranged in the machine-readable zone (101), wherein the identification document has a chip, and wherein the data are further provided for generating an authorization signal for reading a chip content.