Tactile Recognition Element for Interference Effect Security Sheets
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Solution Overview
Problem
Security documents with pale iridescent substances are difficult for users, especially those with weaker vision, to detect due to their lack of visibility and inability to attract attention, making them vulnerable to counterfeiting.
Innovation Solution
Incorporating a tactile recognition element within the same region as the interference effect zone on a sheet, which can be a continuous band, pattern, or design, to draw attention and enhance security by combining tactile and visual recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pale iridescent substances are used as security elements, then the security document becomes more difficult to counterfeit, but the visibility and attention-grabbing capability of the security element deteriorates
Solution Approach 1:
The patent combines a tactile recognition element (such as raised patterns, embossing, or textured surfaces) with the visual interference effect zone in the same region. This merging allows users to detect the security element through both touch and sight, resolving the contradiction between maintaining pale iridescent security features and improving detectability for users with vision defects.
2Reliability
If the interference effect zone is made pale and less visible, then the security document is harder to counterfeit, but the user's ability to detect and verify the security element deteriorates
Solution Approach 1:
The security element is segmented into two functional components within the same region: the visual interference effect zone (which provides anti-counterfeiting through pale iridescent colors) and the tactile recognition element (which provides ease of verification through touch). This segmentation allows each component to fulfill its specific function without compromising the other.
Solution Approach 2:
The tactile recognition element acts as an intermediary that bridges the gap between the invisible pale iridescent security feature and the user's detection capability. By providing a tangible touch point in the same region, it mediates the verification process for users who cannot easily see the interference effect.
3Reliability
If multiple colored regions are used to enhance color change perception, then the interference effect becomes more detectable under oblique observation, but the direct observation visibility remains poor
Solution Approach 1:
The patent adds a tactile dimension to the security element by incorporating raised patterns or textured surfaces in the same region as the interference effect zone. This dimensional addition allows detection through touch, complementing the optical detection methods and improving overall detectability without requiring enhanced visual visibility in direct observation.
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 tactile recognition element ensures users notice the interference effect zone, reinforcing security and making it easier to authenticate documents, particularly for those with vision defects.
Implementation Method 1
substances with an interference effect have the ability to change color depending on the angle of observation and/or illumination
Implementation Method 2
iridescent substances of pale color are used
Data Source
Figure 1~2
AI summary
The invention relates to a sheet (1) comprising a substrate (2) and a securing means (3) including at least one area having an interferential effect (4), characterised in that the securing means (3) further includes at least one tactile recognition member (5) provided in the same region as said area having an interferential effect (4). The invention also relates to a security document and an article to be authenticated comprising said sheet (1).