Luminescent Taggant Authentication Label with Peel Pattern
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Solution Overview
Problem
Counterfeiting of articles such as postage stamps, financial transactions, and identification documents remains a significant issue due to advancements in replication technology, making existing authentication methods less secure and aesthetically compromised, especially with the rise of personalized stamps that require large scrambled indicia reducing image size and appeal.
Innovation Solution
A system incorporating luminescent taggants embedded in a substrate layer with an adhesive layer that forms a detectable pattern upon detachment, emitting a luminescence response to an excitation signal, which can be recognized by a detector, providing a secure and covert authentication method.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional authentication markings (watermarks, holograms) are used, then authentication capability is provided, but security is compromised due to ease of replication by modern copying technology
Solution Approach 1:
The patent uses luminescent taggants that change color or emit light under specific excitation wavelengths. These taggants exhibit fluorescent or phosphorescent properties that are invisible under normal lighting but detectable under UV or IR excitation, creating an authentication feature that is difficult to replicate with standard copying equipment.
Solution Approach 2:
The patent replaces traditional visible optical authentication markings with a system based on luminescent materials that respond to electromagnetic excitation. This substitution from mechanical/visible markings to electromagnetic-based luminescence creates a more secure authentication mechanism resistant to conventional copying methods.
2Reliability
If personalized postage stamps are produced with large scrambled indicia for automation compatibility, then authentication functionality is maintained, but aesthetic appeal and image size are reduced
Solution Approach 1:
The patent extracts the authentication function from the visible domain and places it in the luminescent domain. The luminescent taggants provide authentication capability without requiring large visible scrambled indicia, thus preserving the aesthetic appearance and maximizing the available image area for personalized content.
Solution Approach 2:
The patent moves authentication from the visible two-dimensional plane to a different dimensional space by using luminescent taggants that are invisible under normal lighting. This allows the stamp surface to appear clean and aesthetic while containing hidden authentication features that are activated only under specific excitation wavelengths.
3Reliability
If authentication markings are made more complex and covert, then security is improved, but detection and interpretation difficulty increases
Solution Approach 1:
The patent introduces an intermediary detection device that excites the luminescent taggants and detects their emission. This intermediary system bridges the gap between the covert luminescent markings and the authentication process, making detection straightforward for authorized users while maintaining security against unauthorized examination.
Solution Approach 2:
The luminescent taggants provide immediate visual feedback through their luminescent response when excited by the appropriate wavelength. This feedback mechanism allows for rapid authentication without complex interpretation, as the presence or absence of luminescence clearly indicates whether the authentication features are genuine.
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
Enhances authentication security by creating a complex, difficult-to-replicate pattern that is both aesthetically integrated and resistant to counterfeiting, maintaining the appearance and functionality of the article while ensuring authenticity.
Implementation Method 1
the taggant is configured to emit a luminescence in response to an excitation signal
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
A method of illumating an item is disclosed. The method includes applying adhesive to the item, interspersing a taggant in the adhesive, illuminating the item with an excitation signal, sensing luminescence emitted by the taggant in response to illumination by the excitation signal, and determining the authenticity of the item based on the sensed emitted luminescence. The item can include any item benefited by authentication, and can include a postage stamp. A method of customizing an item is disclosed. This can include the steps of preparing a substrate, applying a security feature to the substrate, printing non-customized information on the substrate, receiving image information, and printing the image information on the substrate.