Interdependent Security Graphics Printing Method
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Solution Overview
Problem
Current security techniques for documents and objects lack interdependence between graphic security elements, relying on external databases for verification and being vulnerable to counterfeiting due to independent EGS that do not produce additional security effects when stacked or juxtaposed.
Innovation Solution
The method involves constructing interdependent graphic security elements using a digital signature decomposition into alphabetical, geometric, and frequency coding, allowing for self-checking without an external database, ensuring the integrity and authenticity of documents or objects by creating a link between EGS that modifies one element automatically leads to identifiable inconsistencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If independent graphic security elements are stacked or placed side-by-side, then the quantity of security features increases, but the overall security effectiveness does not improve and counterfeiting remains possible
Solution Approach 1:
The patent combines multiple independent graphic security elements into a single integrated security feature where the elements are interdependent. The first graphic security element contains encoded information about the second element, creating a unified structure where the security value emerges from their relationship rather than from their individual presence. This merging transforms the security approach from quantity-based to relationship-based validation.
Solution Approach 2:
The first graphic security element acts as an intermediary that encodes and references the second element. Rather than requiring direct verification of each element independently, the system uses the first element as a mediator that contains embedded information about the second, creating a chain of verification that links the elements together and prevents counterfeiting.
2Ease of operation
If external databases are used for verification, then authentication capability is provided, but system complexity and dependency on external systems increase
Solution Approach 1:
The security verification system is designed to be self-contained, with the verification information embedded directly within the graphic security elements themselves. The first element encodes validation information about the second element, allowing the system to verify authenticity through internal cross-validation rather than requiring external database queries. This self-service approach reduces dependency on external infrastructure.
Solution Approach 2:
The verification information is prepared and embedded in advance during the document creation process. The first graphic security element is generated with pre-encoded information about the second element, so that verification can occur immediately without requiring real-time connection to external systems. This preliminary encoding of validation data eliminates the need for complex runtime verification infrastructure.
3Ease of manufacture
If consumer-grade printing is used for micro text, then ease of manufacture increases, but security against counterfeiting decreases
Solution Approach 1:
The patent transforms the security approach from relying on printing quality parameters to relying on information encoding parameters. Instead of using high-resolution printing as the security barrier, the system encodes verification information in the structure and relationship between graphic elements. This parameter change allows standard printers to produce secure documents because the security lies in the encoded information, not the printing fidelity.
Solution Approach 2:
The patent replaces the mechanical security approach (relying on printing precision and physical characteristics) with an information-based security approach. Rather than using the physical properties of the printed text as the security barrier, the system uses encoded information within the graphic elements that can be verified through data validation. This substitution eliminates the need for specialized printing equipment while maintaining security.
Data Source
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AI summary
The invention concerns a method for printing security graphics (EGS) on a support that is to be secured, characterised in that it involves using, in combination, at least three different types of EGS taken from a group of eligible EGS items, and in that said EGS items that are used are interdependent by construction, such that a modification to one of the EGS items forming the print item automatically results in an identifiable inconsistency.