Tamper-proof card reader bonded multilayer protective hood
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing protective covers for card readers are complex and costly to produce, requiring processes like laser structuring and metallization, which are inefficient and expensive.
Innovation Solution
A bonded, multi-layered protective cover assembly is formed by attaching a drill protection foil between two sheet metal covers, creating a continuous conductor track that is easily interrupted upon tampering, detected by a monitoring unit to prevent further reading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protective cover with drill protection is used, then security against tampering is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple protective functions into a single integrated protective cover structure. The cover integrates drill protection conductor tracks, contactless identification reader functionality, and tampering detection capabilities into one unified component, eliminating the need for separate protective structures and reducing overall device complexity while maintaining security
Solution Approach 2:
The protective cover employs composite material construction with conductor tracks embedded within the cover structure. This composite design integrates conductive pathways directly into the protective housing, creating a multi-functional element that provides both mechanical protection and electrical monitoring capabilities without requiring additional separate components
2Reliability
If laser structuring and metallization are used for drill protection, then security is improved, but manufacturing cost increases
Solution Approach 1:
The patent replaces expensive laser structuring and metallization processes with more economical conductor track fabrication methods. The conductor tracks are created using cost-effective techniques such as printing or bonding conductive materials, which are significantly cheaper than laser etching and metallization while providing equivalent drill protection functionality
Solution Approach 2:
The invention changes the manufacturing parameters and methods for creating conductor tracks. Instead of using high-cost laser structuring and metallization processes, the patent employs alternative fabrication approaches with different parameters (such as screen printing, inkjet printing, or bonding pre-fabricated tracks) that reduce manufacturing complexity and cost while maintaining the integrity and protective function of the conductor tracks
3Reliability
If contact surfaces are pressed together with tightening screws, then electrical connection is improved, but device complexity increases
Solution Approach 1:
The patent merges the electrical connection function with the protective cover structure itself. The conductor tracks are integrated directly into the cover, eliminating the need for separate contact surfaces and tightening screw mechanisms. This integration simplifies the assembly process while maintaining reliable electrical connections for tampering detection
Solution Approach 2:
The invention extracts and eliminates the complex tightening screw assembly mechanism from the design. By integrating conductor tracks directly into the protective cover structure, the patent removes the need for separate contact surfaces that require mechanical fastening, thereby simplifying both the structure and assembly process while preserving electrical connectivity for monitoring purposes
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 solution provides a cost-effective and secure protective cover that reliably detects and prevents unauthorized access by interrupting the conductor track, ensuring secure operation of the card reader.
Implementation Method 1
The protective cover is bonded over its entire surface to both the inside of the outer sheet metal cover and the outside of the inner sheet metal cover
Data Source
Figure 1a~2
Figure 3a~7
AI summary
In a card reader (1) for data exchange with a chip card (2), comprising a card insertion opening (4), a contacting unit (6) for data exchange with a chip card (2) inserted into the card reader (1) through the card insertion opening (4), and a protective hood (10) covering the contacting unit (6) except for the card insertion opening (4), the protective hood (10) is formed from two stacked sheet metal hoods (11, 12) and a drill protection film (13) arranged between them, which has the surface-covering drill protection conductor track structure (16), wherein the two sheet metal hoods (11, 12) and the drill protection film (13) are bonded together over their entire surface to form a cover assembly.