Optically Variable Security Code for Anti-Counterfeiting
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Solution Overview
Problem
Current anti-counterfeiting methods are ineffective against sophisticated counterfeiters, as they can replicate optically variable security devices and random code systems, and existing solutions are costly, complex, and inaccessible to consumers for authenticating products and documents.
Innovation Solution
A security device featuring an optically variable security code and a unique serial number, integrated into a substrate that can be affixed to articles, using diffractive structures and machine-readable formats, which can only be reproduced by expensive equipment, combined with a database for authentication verification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional anti-counterfeiting methods (trademarks, logos, seals) are used, then brand identification is achieved, but they are easy to copy by counterfeiters
Solution Approach 1:
The patent employs optically variable ink that changes color or appearance when viewed from different angles or under different lighting conditions. This creates a security feature that is visually striking and difficult to replicate with conventional printing methods, directly addressing the contradiction by making counterfeiting significantly harder while maintaining brand identification capabilities
Solution Approach 2:
The security device combines multiple layers including optically variable ink, clear laminates, and substrates with embedded security features. This composite structure integrates multiple anti-counterfeiting mechanisms into a single device, making it both reliable for authentication and difficult to copy
2Measurement precision
If RFID tags are used for product authentication, then unique identification is achieved, but the cost increases and verification equipment is costly and inaccessible to consumers
Solution Approach 1:
The patent extracts the authentication functionality from complex electronic systems (like RFID) and implements it through visually inspectable security features on the product packaging. This allows authentication to be performed by consumers using simple visual checks rather than requiring expensive electronic verification equipment
Solution Approach 2:
The security device enables consumers to perform authentication themselves through visual inspection of the optically variable features. The product essentially authenticates itself through its inherent security characteristics without requiring external verification equipment, making the system both simpler and more accessible
3Reliability
If sophisticated security markings are used to prevent counterfeiting, then anti-counterfeiting capability is improved, but the markings become too complex for consumers to recognize and validate
Solution Approach 1:
The optically variable ink provides a visually striking color change effect that is both sophisticated in its anti-counterfeiting capability and intuitive for consumers to recognize. The dynamic visual response to viewing angle or lighting changes creates an engaging authentication experience that does not require complex consumer knowledge
Solution Approach 2:
Instead of requiring consumers to verify complex static patterns or codes, the patent inverts the approach by using dynamic optical effects that automatically reveal their authenticity through physical interaction (changing viewing angle or lighting). The verification becomes about observing what changes rather than analyzing what remains constant
4Reliability
If optically variable devices are used as security features, then counterfeiting is deterred, but sophisticated counterfeiters can still replicate them with sufficient resources
Solution Approach 1:
The patent combines multiple security layers including optically variable ink, clear laminates with embedded features, and substrates with security elements. This multi-layer composite structure creates security features that are significantly more difficult to replicate than single-layer optically variable devices, as counterfeiters would need to precisely reproduce the interaction between multiple layers
Solution Approach 2:
The security device embeds multiple security features within each other - optically variable ink within clear laminates, which are attached to substrates that may contain additional embedded security elements. This nested structure creates progressively harder-to-copy security layers that maintain effectiveness against sophisticated counterfeiters
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
Provides a robust, cost-effective, and consumer-friendly method to authenticate articles by using optically variable security codes and serial numbers, deterring counterfeiting and enabling easy verification through a central database, while tracking and controlling the origin and movement of products.
Implementation Method 1
An optically variable device (OVD) is a visual device that creates a change or shift in appearance, such as a change in color or shape, when observed from different relative observation points
Data Source
AI summary
A security device and method are provided for verifying the authenticity of articles, tracking articles, detecting the diversion of articles, and detecting the production of unauthorized articles. The security device includes a substrate and an optically variable security code. The security device may further include a machine-readable representation of the security code. The security device may still further include a unique serial number, which may be machine-readable. The substrate may be an article or, alternatively, the security device may be affixed to an article. An article including at least one of the security devices is also disclosed.