Smart Card Magnetic Authenticity Feature Personalization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current data carriers, such as ID cards and passports, lack personalized security features that are not visible to the naked eye and can be easily verified using common means, posing challenges in authentication and counterfeiting prevention.
Innovation Solution
Incorporating magnetizable components into the data carrier that can be activated by high-energy beams, such as lasers, to create macroscopically measurable magnetism, allowing for invisible and secure personalization and authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional security features are used in data carriers, then basic anti-counterfeiting protection is provided, but personalized and invisible security features cannot be achieved
Solution Approach 1:
The patent applies parameter changes by utilizing the Curie temperature property of magnetic materials. The functional layer contains magnetic particles that can be magnetized by heating above the Curie temperature (using laser irradiation) and then cooling, creating personalized magnetic patterns. This phase transition at a specific temperature threshold enables invisible, customizable security features that are not visible under normal conditions but can be detected with appropriate equipment.
Solution Approach 2:
The patent replaces conventional visible printing and mechanical security features with a magnetic field-based system. Instead of using visible inks or physical embossing, the invention uses magnetic particles that respond to thermal and magnetic fields, creating invisible magnetic patterns that can be read by magnetometers. This substitution enables personalized security features that are both invisible and machine-readable.
2Reliability
If visible security features are implemented, then authentication is possible, but layout freedom is restricted and counterfeiting risk increases
Solution Approach 1:
The patent employs magnetic property changes analogous to color changes. The functional layer transitions from a non-magnetic or weakly magnetic state to a strongly magnetized state in specific patterns, creating invisible 'magnetic colors' that are undetectable to the human eye but readable by magnetometers. This allows authentication features to be embedded without affecting the visual appearance or layout freedom of the data carrier.
Solution Approach 2:
The patent introduces magnetic particles as an intermediary between the substrate and the security feature. These particles are embedded in the functional layer and respond to external magnetic fields or thermal treatment, carrying the security information in an invisible magnetic field rather than through visible markings. This intermediary enables authentication without visual constraints.
3Reliability
If high-energy beams are used for personalization, then secure and invisible features are created, but additional verification equipment is required
Solution Approach 1:
The patent replaces complex optical verification systems with simpler magnetic field detection. Instead of requiring sophisticated laser scanners or optical readers, the invention uses magnetometers to detect the magnetic patterns created in the functional layer. Magnetic field detection is technologically more成熟 and can be implemented with portable, cost-effective devices, reducing verification complexity while maintaining security.
Solution Approach 2:
The patent creates magnetic patterns with specific magnetic moment orientations that can be detected by standard magnetometers. By controlling the magnetization direction and strength during the laser heating and cooling process, the system encodes security information in magnetic parameters (field strength, orientation, distribution) that are readily measurable with conventional magnetic sensing equipment, avoiding the need for specialized verification systems.
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
This method provides a reliable and economically efficient way to personalize data carriers with magnetic features that can be verified using conventional magnetometers, enhancing security without restricting layout freedom and offering protection against counterfeiting.
Implementation Method 1
after activation with an energy beam, in particular a laser beam, at the irradiated location macroscopically measurable magnetism has
Implementation Method 2
macroscopically measurable magnetism has
Data Source
Figure 1~4
Figure 5~7
AI summary
The invention relates to a smart card (9), in particular a plastic card, having a magnetizable authenticity feature (5) integrated into the smart card, which authenticity feature can be personalized upon irradiation with an energy-rich beam due to the change in physical and/or chemical properties. A magnetic feature is provided in a functional layer (2) as an additional personalizable two-stage feature, said magnetic feature being on the basis of an opto-magnetic process that allows the writing of information, thereby producing magnetism in the irradiated area (5a) which can be macroscopically measured, in particular by microscopic spin coupling of the organometallic compounds that are arranged as complexes and produce magnetism that can be macroscopically measured. Said spin coupling is the result of the supramolecular coupling of the spin of a molecule or molecular structure.