Flexible Circuit Anti-Intrusion Device for Electronic Card
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Solution Overview
Problem
Existing solutions for protecting payment terminals with electronic cards are either expensive and difficult to implement, or they only provide mechanical protection that can be easily bypassed, lacking effective detection of intrusion attempts.
Innovation Solution
An anti-intrusion device featuring a flexible circuit with an electrically conductive trellis track connected to processing means, a support guide, and a protective cover with elastic lugs that disengage upon unscrewing, allowing detection of intrusion attempts by changes in the conductive track's resistance, triggering anti-fraud functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a metal cover is used for mechanical protection, then the difficulty for a malicious third party to gain access increases, but the protection is easily bypassed once removed and does not prevent access to the electronic card region
Solution Approach 1:
The patent replaces the purely mechanical protection system with an electrical detection system. A conductive track is integrated into the protective cover, connected to processing means that can detect when the cover is removed or tampered with. This substitution of mechanical detection with electrical sensing provides reliable intrusion detection while maintaining the mechanical protection structure.
Solution Approach 2:
The patent uses a flexible circuit board as the protective cover instead of a rigid metal cover. This flexible shell contains a conductive track that can detect intrusion attempts. The flexible nature allows for integration of the electrical detection components while maintaining protective functionality, resolving the contradiction between mechanical strength and detection reliability.
2Reliability
If a protective cover with conductive track is used to detect intrusion attempts, then intrusion detection reliability improves, but the device becomes expensive and difficult to implement
Solution Approach 1:
The protective cover serves multiple functions: it provides mechanical protection, contains the intrusion detection conductive track, and acts as a structural element of the terminal. By making the cover multi-functional, the patent reduces the need for separate components, thereby lowering implementation complexity while maintaining detection reliability.
Solution Approach 2:
The patent merges the protective cover structure with the intrusion detection system by integrating the conductive track directly into the cover itself. This consolidation of the protection function and detection function into a single integrated component simplifies the overall device structure and reduces implementation complexity.
3Reliability
If the protective cover is made secure and difficult to remove, then intrusion prevention improves, but maintenance and authorized access become more difficult
Solution Approach 1:
The patent introduces a dynamic release mechanism that allows the protective cover to transition between a secure locked state during normal operation and an accessible unlocked state during authorized maintenance. The cover can be firmly attached to prevent intrusion but can be easily removed by authorized personnel using a specific release mechanism, thus resolving the contradiction between security and maintainability.
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 device effectively detects and prevents unauthorized access to the electronic card's connector pins, offering a cost-effective and efficient protection mechanism that balances security and maintainability.
Implementation Method 1
detection by processing means of the terminal resulting in the activation of anti-fraud functions
Implementation Method 2
the cover comprises elastic lugs which return to form when unscrewed, allowing the anti-intrusion device to be disengaged
Data Source
Figure 1~2
Figure 3~5
Figure 4~6
AI summary
The invention relates to an access-protection device for an electronic card, including a flexible circuit (2) that comprises an electrically conductive track (21) in the shape of a mesh connected to processing means of the electronic card, a guide (3) around which the flexible circuit (2) is arranged and for maintaining the flexible circuit (2) in position, and a protection hood (4) provided about the assembly comprising the guide (3) and the flexible circuit (2), wherein said access-protection device can be configured to be installed in an area of the card to be protected.