2D Barcode Stamp Arrangement for Document Authentication
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Solution Overview
Problem
Existing methods for creating and placing two-dimensional barcode stamps on printed documents for authentication often result in an unattractive appearance and potential security risks due to the use of regular array patterns, which can be altered or removed, and may not have sufficient white space to accommodate the necessary number of stamps for encoding document content.
Innovation Solution
The method involves generating and arranging two-dimensional barcode stamps in a pre-defined, non-regular pattern on the backside of the document, with each stamp encoding linking information to indicate the position of the next stamp, ensuring secure and detectable alterations, and optionally including an index barcode on the front for verification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If barcode stamps are arranged in a regular array pattern, then the document authentication process is simple to implement, but the appearance becomes unattractive and security is compromised
Solution Approach 1:
The patent applies asymmetry by arranging barcode stamps in non-regular patterns (such as spiral, radial, or irregular clusters) instead of traditional regular arrays. This asymmetric arrangement enhances security because it is more difficult to replicate or tamper with, while also improving aesthetic appearance. The authentication system verifies the specific positional relationships between stamps, making irregular patterns both secure and visually appealing.
2Quantity of substance
If more barcode stamps are placed on the document, then more authentication data can be encoded, but the available white space is insufficient
Solution Approach 1:
The patent implements nesting by placing multiple barcode stamps within compact, space-efficient arrangements. The non-regular patterns allow stamps to be nested more densely than regular grids, maximizing the use of available white space. Additionally, the stamps can be arranged to nest around document elements like margins or existing layouts, encoding substantial authentication data without requiring excessive document area.
3Reliability
If barcode stamps are arranged in a non-regular pattern, then the appearance and security are improved, but the arrangement becomes more complex
Solution Approach 1:
The patent applies preliminary action by pre-defining specific non-regular patterns (such as standard spiral patterns, radial patterns, or cluster patterns) that can be automatically selected and applied during document authentication. These pre-established patterns reduce the complexity of arrangement by providing ready-to-use templates, while still maintaining the security and aesthetic benefits of non-regular configurations. The system automatically generates stamps according to the selected pre-defined pattern without requiring manual complex arrangement.
Data Source
AI summary
A document authenticating method is disclosed by which a plurality of two-dimensional barcode stamps are generated and printed on a back side of the document forming a pre-defined special pattern. The barcode stamps collectively encode the content of the document to be used for document authentication. Each barcode stamp encodes linking information indicating the position of the next barcode stamp. An index barcode may be printed on the front side of the document which encodes the position information for all of the barcode stamps on the back side.