Invisible Security Patterns on Text Edges for Document Authentication
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Solution Overview
Problem
Existing document security techniques expose security marks to users, making them susceptible to duplication and require complex processing or special scanners, and are often non-user-friendly.
Innovation Solution
A multi-function device adds security patterns, such as color dot patterns, around the edges of textual content in documents, invisible to the naked eye, using edge detection and filtering based on user-provided or pre-defined stamping information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If security marks are added to documents using conventional techniques, then document security is improved, but the security marks become visible to users increasing duplication risk
Solution Approach 1:
The patent applies color dot patterns that are imperceptible to the human eye but detectable by scanners. These patterns are embedded in the document and change from being invisible to visible only under specific detection conditions, thereby maintaining security while preventing duplication.
Solution Approach 2:
The patent introduces color dot patterns as an intermediary element between the document content and the security verification process. These patterns serve as a mediator that provides security information to scanners without being noticeable to users, thus preventing duplication while maintaining document usability.
2Reliability
If conventional security mark techniques are used, then document authentication is achieved, but complex processing and special scanners are required
Solution Approach 1:
The patent uses color dot patterns that can be copied along with the document content using standard copying processes. This eliminates the need for special scanners and complex processing, as the security patterns are embedded in the document itself and can be verified through simple scanning.
3Reliability
If conventional security mark techniques are used, then document protection is provided, but the process is non-user-friendly
Solution Approach 1:
The patent enables security pattern addition through standard copying processes that users can operate without special training. The color dot patterns are automatically embedded during the copying process, making the security feature transparent and user-friendly while maintaining strong document protection.
Data Source
AI summary
The present disclosure discloses methods and systems for adding security patterns in a document submitted at a multi-function device. The method includes receiving the document at the multi-function device from a user, wherein the document includes at least textual content. Further, the method includes obtaining stamping information, wherein the stamping information includes at least one of: portion information, edge filtering criteria, and pattern information. Thereafter, document is processed to detect edges of the at least textual content. Upon detection, one or more text edges matching the edge filtering criteria are filtered from the detected edges of the at least textual content. Finally, the one or more security patterns are added to the one or more matched text edges, thereby resulting in a stamped document.