Hologram QR Code Anti-Replication via 3D Depth
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Solution Overview
Problem
Existing QR codes are easily replicable, making them unsuitable for secure applications, as they lack structural differences that would prevent duplication.
Innovation Solution
A 3D hologram QR code is generated by dividing a 2D QR code into sub-codes at different depths and recording them as a holographic fringe pattern on a hologram medium, which are then scanned and reconstructed to provide a secure, uncopyable code.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional 2D QR code is used, then it is easy to manufacture and scan, but it is easily replicated and lacks security
Solution Approach 1:
The patent transforms the traditional 2D QR code into a 3D holographic structure by adding the depth dimension. Sub-codes are positioned at different depths within the hologram, creating a multi-layered code structure that cannot be replicated by simple copying while maintaining scannability through optical reconstruction
Solution Approach 2:
The QR code is divided into multiple sub-codes that are distributed at different depths within the hologram. Each sub-code contains portions of the original information, and they are reconstructed when viewed from the correct angle, making the code secure against replication while maintaining functionality
2Reliability
If a 3D hologram structure is created with sub-codes at different depths, then security is enhanced, but the scanning process becomes more complex
Solution Approach 1:
The hologram uses dynamic optical properties where the 3D code structure can be optically reconstructed into a 2D plane during scanning. The focal distance of the camera dynamically adjusts to capture sub-codes at different depths, and the system automatically reconstructs the complete code, making the complex process transparent to the user
3Reliability
If multiple sub-codes are positioned at different depths, then duplication is prevented, but the manufacturing process becomes more complex
Solution Approach 1:
The patent replaces complex physical assembly processes with computational hologram generation. A computer generates the holographic fringe pattern that encodes the 3D position information of sub-codes, and a hologram printer records this pattern on a hologram recording medium, simplifying the manufacturing process while maintaining the complex 3D structure
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 3D hologram QR code is difficult to duplicate, enhancing security by utilizing depth variations and holographic technology, making it suitable for applications requiring high security.
Implementation Method 1
generating the generated 3D code in a holographic fringe pattern
Implementation Method 2
recording the generated holographic fringe pattern on a hologram recording medium
Implementation Method 3
scanning from a sub 2D code having a shallow depth to a sub 2D code having a great depth in sequence while adjusting a focal distance of a camera
Data Source
AI summary
Provided is an uncopyable hologram QR code, According to an embodiment of the present disclosure, a 3D code generation method divides a 2D code having specific information recorded thereon into a plurality of sub 2D codes, and generatES a 3D code by coupling at least one of the divided sub 2D codes at a different depth. Accordingly, a QR code is recorded on a hologram recording medium as a hologram, and is displayed and scanned, so that it is impossible to easily duplicate the QR code unlike an existing 2D QR code.