Multi-Layer Graphic Signature for Object Authentication
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Solution Overview
Problem
Existing methods for securing objects lack uniqueness and reproducibility, making them vulnerable to counterfeiting due to mechanical tolerances in production processes.
Innovation Solution
A multi-layer graphic signature is created by superposing random graphic elements on multiple layers of an object, with each element's position being random, and storing this signature within the object, allowing for authentication through digital signatures and identifiers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a graphic signature is created using fixed positioning of graphic elements, then the manufacturing process is simple and precise, but the signature lacks uniqueness and can be easily replicated
Solution Approach 1:
Instead of trying to achieve precise positioning of graphic elements, the invention inverts the approach by intentionally introducing random positioning errors. The graphic elements are deliberately placed with mechanical tolerances that create unique, non-replicable patterns, turning a manufacturing limitation into a security feature that ensures each signature is unique.
2Reliability
If multiple layers with random graphic elements are superposed, then the security and uniqueness of the signature is enhanced, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The signature is divided into multiple independent layers, each containing graphic elements that can be manufactured and positioned separately. This segmentation allows each layer to be produced with standard mechanical tolerances, and the combination of multiple layers creates a complex, unique signature that is difficult to replicate while maintaining manageable manufacturing processes for each individual layer.
3Reliability
If random positioning of graphic elements is used, then the signature becomes unique and non-replicable, but the verification and authentication process becomes more complex
Solution Approach 1:
The invention creates a digital copy or reference pattern of the random graphic signature during manufacturing. This reference pattern is stored and used for later verification by comparing it with the physical signature on the object. This copying approach simplifies verification by providing a direct comparison reference, eliminating the need for complex algorithms to generate or validate the random pattern.
Data Source
AI summary
A method for making an object secure comprises creating a multi-layer graphic signature by superposing, in partial or total transparency, a first random graphic element on a first layer to a second graphic element on a second layer, and storing the graphic signature on or in the object. The method is essentially characterized in that the relative position of the first graphic element and of the second graphic element is random.