Card Reader Shutter Open Part Segmentation for Skimming Prevention
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Solution Overview
Problem
Conventional card readers face the risk of skimming device installation due to open parts, which also hampers the ejection of foreign objects like dust, potentially disrupting card movement and data security.
Innovation Solution
A card reader design featuring a rotatable shutter member with controlled open parts to prevent skimming device installation and facilitate foreign object ejection, where the shutter member rotates between block and open positions, and specific open parts are strategically placed to avoid interference and ensure secure data protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a comparatively large open part is shaped in the surface at the other side of the card transfer path to eject foreign objects, then foreign object ejection is enabled, but the risk of skimming device installation increases
Solution Approach 1:
The open part is divided into two distinct segments: a first open part for foreign object ejection and a second open part for preventing skimming device installation. This segmentation allows each open part to serve its specific function independently, resolving the contradiction between enabling foreign object ejection and preventing security threats.
Solution Approach 2:
Different regions of the open part structure are assigned different qualities and functions. The first open part has characteristics suitable for ejecting foreign objects, while the second open part is specifically designed with features that prevent skimming device installation, such as restricted access or specific geometric configurations that allow only legitimate card passage.
2Object-affected harmful factors
If the open part is blocked to prevent skimming device installation, then data security is improved, but foreign object ejection becomes difficult
Solution Approach 1:
Instead of blocking the entire open part, the structure is segmented into two separate open parts with different functions. The first open part remains open for foreign object ejection, while the second open part is configured to prevent skimming device installation, thus maintaining both capabilities simultaneously.
3Ease of operation
If the shutter member rotates to the open position, then card transfer path is opened for card insertion, but interference with the main body frame may occur
Solution Approach 1:
The open part structure is segmented to provide clearance for the shutter member's rotation path. The first open part is positioned and sized to allow the shutter member to rotate from the blocked position to the open position without interfering with the main body frame, while still enabling foreign object ejection.
Data Source
AI summary
In a card reader (1), if a shutter member (10), being located at a block position for blocking a card transfer path (3), rotates toward a deep side of the card reader, the shutter member moves to an open position. In a part within a surface of a side of the card transfer path in a thickness direction of the card (2), at a side deeper than the shutter member, there are formed only an open part (31) and an open part (32); the open part being for preventing an interference of the shutter member, rotating toward the open position, with the main body frame (4), as well as ejecting a foreign object out of the card transfer path; the open part being for preventing an interference of a movable component (21), placed so as to face the card transfer path, with the main body frame.