Dynamic Security Element With 3D Pattern For Forgery Resistance
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Solution Overview
Problem
Existing security devices and authentication methods rely on static features that can be easily forged using modern technologies, such as 3D printing, making them susceptible to counterfeiting.
Innovation Solution
A security device with a carrier material embedding a three-dimensional pattern that can dynamically change through the deposition or removal of detectable substances, allowing for a dynamic appearance that can be scanned and stored, providing a unique appearance at each authentication time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If static security features (numbers, passwords, biometric features, or complex static structures) are used, then authentication can be performed, but the security device becomes susceptible to forgery using modern technologies such as 3D printing
Solution Approach 1:
The patent applies the dynamics principle by implementing a security feature that can dynamically change its appearance over time. The security element modifies its visual characteristics through processes such as crystallization, phase transitions, or chemical reactions, allowing it to present different states at different authentication times. This dynamic behavior prevents forgery because a static copy cannot replicate the temporal evolution of the security feature.
Solution Approach 2:
The patent utilizes parameter changes by altering physical or chemical parameters of the security feature over time. Examples include changes in refractive index, density, molecular arrangement, or optical properties that cause the security element to appear different at different times. These parameter changes are inherent to the material's behavior under specific conditions, making the security feature unpredictable and resistant to copying.
2Reliability
If complex static structures are used to increase security, then forgery resistance improves, but the device complexity increases
Solution Approach 1:
The patent applies the copying principle by creating a security feature that intentionally prevents accurate copying. The dynamic, time-varying nature of the security element means that any attempt to create a copy or replica will result in an inaccurate representation, as the original continuously changes. This inherent uncopyability provides security without requiring complex structural designs.
3Reliability
If a random two-dimensional image is applied to a rough surface, then security against forgery is increased, but the security feature remains static between authentication times
Solution Approach 1:
The patent transforms the static random image concept into a dynamic system by incorporating materials or mechanisms that cause the image to change over time. This could involve phase-changing materials, crystallization processes, or other temporal evolution mechanisms that ensure the random pattern is different at each authentication, combining the benefits of randomness with temporal variability for enhanced security.
Data Source
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Figure 3A~3C
AI summary
The invention relates to a security device and an authentication method in which a security element (1) is provided. The security element comprises a support material (6) in which a three-dimensional pattern with structures (4) such as cracks, grooves, chipping, depressions, scaling, elevations, and/or shrinkage are embedded as static or dynamic security features. Additionally, a material which can be detected by a scanning device or a material composition is deposited or incorporated at least partly onto or into the three-dimensional pattern embedded into the support material (6) and can be re-applied onto or removed from the security element if necessary, whereby the color, intensity, structure, layer thickness, individual pigments or another physical property of the support material (6) and/or the three-dimensional security element (1) pattern imbedded into the support material is changed such that an at least partly changed appearance is produced which can be detected by the scanning device at an authentication time and stored in storage means.