Multi-Page Passport Security Features Against Page Replacement
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Solution Overview
Problem
Existing multi-page secured documents, such as passports, lack sufficient security features that can be easily read without external devices and are vulnerable to forgery, especially when individual pages are tampered with.
Innovation Solution
Integrate at least two different security features with a reading element on another page of a multi-page document, where one security feature is hidden and readable with a lens array, and the other is visible at an angle, ensuring high security by making it difficult to replace a data page without leaving traces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional security features are used on individual pages, then the document provides basic security, but the document remains vulnerable to forgery and page replacement
Solution Approach 1:
The security system is divided into separate components distributed across different pages: security elements on first and second pages, reading element on third page, and co-forming element on fourth page. This segmentation allows each component to be verified independently while requiring all components to work together for complete authentication, preventing forgery of individual pages.
Solution Approach 2:
The patent implements a nested security structure where security elements are embedded within the document pages, reading elements are integrated into specific pages, and co-forming elements are positioned to work with security elements across page boundaries. This nested arrangement creates multiple layers of security that must all be present and correctly positioned for the document to be authentic.
2Reliability
If security features are integrated across multiple pages, then the difficulty of counterfeiting increases, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
By segmenting security features into discrete elements that can be applied to different pages separately, the manufacturing process becomes more manageable. Each page can be produced with its specific security elements, then assembled into the complete document, reducing the complexity of integrating all security features in a single manufacturing step.
Solution Approach 2:
Security elements are applied to pages during the page production process before final assembly, and reading/co-forming elements are integrated into pages during their respective manufacturing processes. This preliminary application of security features simplifies the overall manufacturing workflow by distributing the complexity across multiple independent production steps rather than requiring complex integration during final assembly.
3Reliability
If hidden security elements are used that require reading elements, then security is enhanced, but the ease of reading and verification without external devices is reduced
Solution Approach 1:
The patent implements different types of security elements with different readability characteristics: some security elements are visible without assistance, while others require reading elements for decryption. This local differentiation allows the document to provide both immediate visual verification and enhanced security encoding, catering to different verification needs at different locations within the document.
Solution Approach 2:
Reading elements act as intermediaries between the hidden security elements and the verifier. These reading elements are integrated into the document pages themselves rather than requiring external devices, providing the necessary mediation to decode hidden security information while maintaining accessibility within the document structure.
4Reliability
If multiple security elements are distributed across pages, then page replacement is detected, but the complexity of verifying all security features increases
Solution Approach 1:
Security verification is segmented into independent checks for each page's security elements and their corresponding reading/co-forming elements. This allows verifiers to check pages systematically and stop the verification process if any single page fails its security checks, reducing the total verification time compared to requiring complete verification of all pages regardless of individual failures.
Solution Approach 2:
The verification process can be completed with partial action by checking only the pages containing security elements and their corresponding reading/co-forming elements, rather than requiring exhaustive verification of every page in the document. This partial verification approach maintains security while reducing verification time and effort.
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
The integrated security features provide enhanced document security by allowing easy reading of encoded information without external devices and preventing page replacement, thus increasing the difficulty of counterfeiting.
Implementation Method 1
a reading element for reading the first security feature
Data Source
Figure 1
Figure 2A~2E
Figure 3
AI summary
The present invention provides a multi-page document, such as a passport booklet, with security features integrating selected pages of the document. The multi-page secured document (100) according to the invention comprises a first document sheet (110) on or in which a first security feature (111) is provided including a first security element (117) and, preferably, a second security element (118) and a second document sheet (120) on or in which a third security element (122) is preferably provided and a third document sheet (130) provided on at least part of the sheet with a window (139) with a reading element (131) for reading the first security feature (111) and preferably, when the third security element (122) is present, with a co-forming element (132). Reading element (131) serves to enable reading of the first security feature (111), creating together with it the first optical security feature (115). The co-forming element (132) serves to co-form, with the third security feature (122), the second optical security feature (127). Both the first and second security element (118) may contain an indication, for example, such as an image, pattern, motif, background or sign, while the third security element (122) may, together with the co-forming element, form a marking, preferably personalized, such as an image, sign, pattern or background. The present invention also relates to a method of securing multi-page secured documents (100) with an increased level of security and increased functionality, in particular due to the presence of security features integrating the pages of the document, the security features including compatible elements located on or in different sheets of the multi-page secured document (100) and having the option for their personalization.