Multi-layer Authentication Using Printable Inks
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Solution Overview
Problem
Conventional methods fail to effectively address product counterfeiting, which is a significant economic issue, as they lack robust authentication mechanisms that are difficult to reproduce and verify.
Innovation Solution
A multi-layer authentication system using printable inks and materials, where each layer contains unique authentication components with different properties, such as emissive, reflective, and transmissive properties, that emit distinct thermal or optical signals when activated, providing a unique signature that can be verified using sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional authentication methods are used, then the system is simple to implement, but the security level is insufficient against counterfeiting
Solution Approach 1:
The authentication system is divided into multiple independent layers, each containing different types of authentication components (emissive, reflective, transmissive). This segmentation allows each layer to provide a specific authentication function while collectively creating a robust multi-level security system that is difficult to counterfeit but can be verified through simple sensor readings.
Solution Approach 2:
The patent employs composite authentication structures combining multiple material types (emissive materials, reflective materials, transmissive materials) within a single authentication tag. This composite approach creates unique multi-dimensional signatures that significantly enhance security against counterfeiting while maintaining ease of verification through non-contact sensing.
2Measurement precision
If multiple authentication components are used, then the unique signature capability is enhanced, but the manufacturing complexity increases
Solution Approach 1:
The authentication components are designed to automatically generate their unique signatures through their inherent physical properties (emission, reflection, transmission characteristics) without requiring complex external processing or programming. This self-service capability enables precise signature generation while simplifying the manufacturing process, as the uniqueness arises naturally from the physical materials rather than complex fabrication procedures.
3Reliability
If robust authentication mechanisms are implemented, then counterfeiting resistance is improved, but the verification process becomes more complex
Solution Approach 1:
The patent replaces complex mechanical or computational verification systems with simple optical or electromagnetic sensing. The authentication components' physical properties (emission, reflection, transmission) are directly measurable by sensors without requiring complex data processing, thereby achieving high counterfeiting resistance through physics-based authentication while maintaining operational simplicity.
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 system provides a high level of security by making it difficult to reproduce the authentication tags and enables efficient verification of authenticity without the need for complex data processing, effectively combating product counterfeiting.
Implementation Method 1
each layer contains unique authentication components with different properties, such as emissive, reflective, and transmissive properties, that emit distinct thermal or optical signals when activated
Implementation Method 2
each layer contains unique authentication components with different properties, such as emissive, reflective, and transmissive properties
Data Source
AI summary
Among other concepts, this disclosure describes a thermal/optical/electronic authentication system (covert or non-covert) for device/system implementations. The authentication system may be based on different design parameters such as i) materials composition, ii) thickness of material, iii) geometry of material, iv) external effects including use of an external DC bias and curing, etc. The authentication testbeds can be configured to include one or more inks. Using such methods as discussed herein, the authentication can be broadened to include near-IR (700-900 nm), short wave IR (1-2.6 mm), and UVA (300-400 nm) or any spectrum. Printed resistors are very difficult to duplicate without Ag-BST13 ink. If necessary, a printed resistor network on a respective substrate can be hidden using a layer of non-sintered Ag-BST13 (non-conductive).