Anti-Intrusion Device for Memory Card Reader Security
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Solution Overview
Problem
Existing memory card-reading devices, such as payment terminals, lack effective protection against fraudulent access to the contact points where signals are exchanged between the memory card and the processor, leaving a vulnerability that can be exploited to record sensitive data.
Innovation Solution
An anti-intrusion device is mounted directly on the printed circuit, forming a protective enclosure around the contact points, which prevents external access and includes a three-dimensional conducting circuit with embedded vias to ensure a short circuit if tampered with, thus triggering secure processor action.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protective cover is built directly on the memory card connector, then security protection against fraudulent access is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The protective function is segmented from the memory card connector itself and implemented as a separate anti-intrusion device mounted on the printed circuit board. This segmentation allows the connector to remain simple while security protection is added independently through a dedicated component with conductive mesh structure.
Solution Approach 2:
An intermediary anti-intrusion device is introduced between the fraudulent access path and the contact points. This device acts as a mediator that blocks unauthorized access while allowing legitimate signal transmission through its conductive mesh structure, without requiring modification of the original connector.
2Reliability
If a fixed protective cover is integrated with the memory card connector, then security protection is improved, but ease of repair deteriorates
Solution Approach 1:
The protective function is separated from the memory card connector as an independent anti-intrusion device mounted on the printed circuit board. This segmentation enables the connector to be replaced or repaired independently without affecting the protective cover, and vice versa, greatly improving ease of repair.
Solution Approach 2:
The protective system is designed to be dynamically configurable rather than fixed. The anti-intrusion device can be independently installed, removed, or replaced on the printed circuit board, allowing flexible maintenance and repair operations without permanent integration constraints.
3Ease of operation
If a removable protective cover with pivot mechanism is used, then ease of operation for maintenance is improved, but device complexity increases
Solution Approach 1:
The protective function is segmented into a separate anti-intrusion device that mounts directly on the printed circuit board using simple connector areas. This eliminates the need for complex pivot mechanisms while maintaining ease of installation and removal through standard PCB mounting techniques.
Solution Approach 2:
The mechanical pivot system is replaced with an electronic/circuit-based mounting approach. The anti-intrusion device connects to the printed circuit through electrical connector areas, substituting mechanical complexity with simpler electronic integration that provides equivalent or better ease of operation.
4Reliability
If the entire memory card connector is replaced to add protection, then security protection is improved, but loss of substance and manufacturing cost increase
Solution Approach 1:
The protective function is extracted from the memory card connector assembly and implemented as a separate anti-intrusion device on the printed circuit board. This extraction prevents loss of the original connector components while adding security protection independently.
Solution Approach 2:
The anti-intrusion device serves multiple functions: it provides security protection, maintains signal transmission through its conductive mesh, and can be independently installed or removed. This multi-functionality eliminates the need to replace the entire connector assembly, preventing loss of existing functional components.
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 solution provides robust, cost-effective protection against unauthorized access to the memory card connector contact points, maintaining functionality while preventing data breaches and allowing for easy and inexpensive implementation during manufacturing.
Implementation Method 1
includes a three-dimensional conducting circuit and at least two elements enabling contact of the three-dimensional conducting circuit with a connector area of the anti-intrusion device on the printed circuit
Data Source
AI summary
A memory card reader is provided, which includes a printed circuit on which a memory card connector is mounted. The memory card connector has a slot intended for inserting a memory card and a set of contact points enabling data exchange between the memory card and a processor mounted on the printed circuit. The printed circuit is further equipped with an anti-intrusion device formed and positioned such that the anti-intrusion device prevents access, from the exterior of the reader, to at least one connection portion between at least one of the contact points of the set of contact points and the printed circuit.