Smart Card Module Authentication via Laser-Perforated Through-Holes
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Solution Overview
Problem
Current smart cards are vulnerable to fraud as it is difficult for merchants to detect tampering, such as a pirated electronic module attached to an authentic card body or vice versa, which can lead to unauthorized transactions.
Innovation Solution
Incorporating through holes with varying diameters and flared shapes in the card body and electronic module, which are laser-perforated and aligned to ensure authenticity, allowing light to pass only when the module and card body are authentically paired, facilitating visual inspection and additional verification through stored patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional smart cards without authentication features are used, then manufacturing and operation are simple, but security is poor and fraud detection is difficult
Solution Approach 1:
The card is divided into distinct components: card body, electronic module, and authentication elements (through-holes with patterns). This segmentation allows the authentication function to be added as a separate feature rather than integrating complexity into the core card structure.
Solution Approach 2:
The patent uses optical properties (light transmission through holes) as a visual authentication mechanism. The patterns formed by aligned holes create a visible effect that changes based on whether the module and card body are properly paired, providing a simple visual security feature.
2Difficulty of detecting and measuring
If through holes are added for authentication, then fraud detection capability is improved, but manufacturing precision requirements increase
Solution Approach 1:
The through-holes and their patterns are pre-formed in the card body during manufacturing. This preliminary action ensures that the authentication feature is built-in from the start, and the electronic module is later matched to these pre-existing patterns rather than requiring precise alignment during assembly.
Solution Approach 2:
The authentication system is self-verifying through visual inspection. The aligned holes automatically create a visible pattern that confirms authenticity without requiring external equipment or complex verification procedures, making the system self-sufficient for fraud detection.
3Reliability
If flared-shaped holes are used instead of cylindrical holes, then anti-fraud capability is enhanced, but manufacturing complexity increases
Solution Approach 1:
The patent replaces traditional mechanical authentication methods (physical seals, adhesives) with an optical field-based system using light transmission through flared holes. This substitution allows for enhanced security through optical patterns while maintaining relatively simple manufacturing using laser or chemical etching techniques.
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 security by making it difficult for fraudsters to align holes correctly, ensuring the module and card body are authentic, thus preventing unauthorized transactions and simplifying verification through visual inspection and card reader checks.
Implementation Method 1
each hole is made by laser perforation
Implementation Method 2
Each hole which allows light to pass thus guarantees the authenticity of the association of the electronic module with the card body
Data Source
Figure 1~2
Figure 3~5
Figure 6~8
AI summary
The invention relates to a smart card comprising an electronic module and a card body supporting said module. The smart card (20) comprises a card body (21) provided with a cavity (22), and an electronic module (1) having at least one portion (19) that has a thickness lower than that of the card body. The electronic module (1) is recessed in the cavity (23) and rigidly connected to the card body (21). At least one through-hole (27, 28) consecutively crosses the portion (19) of the module (1) that has a thickness lower than that of the card body (21) and the card body (21). The invention applies in particular to the field of bank cards.