Card Reader Skimming Detection via Metal Sensor
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional card readers are vulnerable to skimming devices, which involve attaching a magnetic head to intercept magnetic data, and existing detection systems are complex and require large apparatuses to prevent such illegal acts.
Innovation Solution
A card reader with a simple structure incorporating a metal sensor positioned perpendicular to the card insertion direction, alongside an infrared sensor, to detect foreign metal attachments and human presence, preventing skimming by generating noise or blocking card insertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an imaging device with autofocus control function is used to detect skimming devices, then detection capability is improved, but device complexity increases
Solution Approach 1:
The patent extracts the essential detection function from the complex imaging device and implements it using a simple metal sensor that detects only the metallic component of skimming devices. This eliminates the need for lenses, autofocus mechanisms, and image processing systems while retaining the core detection capability.
Solution Approach 2:
The patent replaces expensive, complex imaging devices with inexpensive metal sensors that can be easily integrated into the card reader. The simple sensor structure reduces manufacturing costs and simplifies maintenance while providing adequate detection functionality.
2Reliability
If a skimming device detection system with imaging device is used, then illegal act prevention is improved, but apparatus size increases
Solution Approach 1:
The patent merges the skimming detection function with the existing card reader structure by integrating a compact metal sensor within the card insertion slot housing. This eliminates the need for separate imaging devices and external detection systems, reducing overall apparatus size while maintaining prevention capability.
Solution Approach 2:
The metal sensor serves multiple functions: detecting skimming devices, verifying card presence, and potentially detecting other metallic foreign objects. This multi-functionality reduces the need for additional specialized sensors and maintains comprehensive security with a compact design.
3Measurement precision
If a metal sensor is positioned at the same widthwise position as the magnetic head, then skimming detection accuracy is improved, but sensor exposure to damage increases
Solution Approach 1:
The patent nests the metal sensor within the card insertion slot housing structure, positioning it behind the front face of the insertion slot. This protective nesting maintains the sensor's detection alignment with the magnetic head while shielding it from direct exposure to attempted damage by criminals.
Solution Approach 2:
The card insertion slot housing acts as an intermediary protective structure between the metal sensor and external threats. The housing allows the sensor to maintain its optimal detection position while providing physical protection against damage attempts.
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
Effectively detects and prevents skimming devices with a simpler setup than existing systems, ensuring secure magnetic data transactions without the need for large apparatuses.
Implementation Method 1
a metal sensor for detecting attachment of a foreign matter including metal material to a front face side of the card insertion part
Implementation Method 2
a magnetic head which performs at least one of reading of magnetic data recorded on a card and recording of magnetic data to the card
Implementation Method 3
a magnetic head which performs at least one of reading of magnetic data recorded on a card and recording of magnetic data to the card
Data Source
AI summary
Disclosed is a card reader which has a comparatively simple construction and is capable of appropriately detecting whether or not a magnetic head for skimming has been attached thereto. A card reader is provided with: a magnetic head which reads magnetic data recorded on a card and/or records magnetic data onto a card; a card insertion unit which has an insertion opening into which a card is inserted formed therein; and a metal sensor (which detects that a foreign body containing metal material has been attached to the front surface side of the card insertion unit. The metal sensor is arranged in substantially the same position as the arrangement position of the magnetic head, in the width direction of the card.