Swipe card system with data protection

Abstract

A card swiping system with data protection function comprises a safety processing device and a reading device linked to the safety processing device. The security processing device includes a control unit. The reading device includes a flexible circuit board unit connected with the control unit. The flexible circuit board unit has two detection circuit layers. Each detection circuit layer has a first bend detection circuit for a first signal transmission, a second bend detection circuit for a second signal transmission, and a partition for a third signal transmission circuit. The first bend detection circuit and the second bend detection circuit respectively form a plurality of bend intervals. The isolated circuit has a plurality of branch line parts stretched in the corresponding bending intervals. In this way, the branch line effectively separates the two adjacent bends that are spaced apart from each other in the first and second bend detection circuits, so that the bends cannot be easily connected by an external bridge, effectively Improve data protection.

Description

technical field [0001] The invention relates to a card swiping system for financial payment, in particular to a card swiping system with data protection function. Background technique [0002] POS machines, which are commonly used in financial transactions today, are convenient for consumers to swipe their cards to pay the amount. However, the confidential data such as the swiped card data, the input password and the amount during the transaction must be protected to prevent the swiped card data from being skimmed, stolen or tampered with. harm. [0003] Generally speaking, the POS machine uses its magnetic card reading unit (Magnetic Swipe card reader, MSR) to swipe the card, and obtains the card information and cooperates with the internal signal transmission circuit to transmit the card information to the security protection device (Security box) of the POS machine. ) to perform follow-up transaction operations, such as: card acquisition of remote bank authorization auth...

AI Technical Summary

Problems solved by technology

However, the common method of hacking is to invade the magnetic card reading unit, such as: hacking the magnetic card reading unit to connect the internal signal transmission circuit, etc., resulting in the confidential data of the card being stolen during the card swiping transaction process.

Although there is a detection and protection circuit added to the signal transmission circuit of the magnetic card reading unit, when an external force tampers with the internal signal transmission circuit of the link, it will cause the detection and protection circuit itself to form an open circuit or cause the detection and protection circuit to be disconnected from the power supply. The protection mechanism that the circuit or other signal lines are short-circuited to trigger and activate the safety protection device

However, the current detection and protection circuit has a relatively simple structure and is easily bridged by tampering. Once the detection and protection circuit is tampered with and bridged, the detection and protection circuit itself will not form an open circuit or the detection and protection circuit will not be connected to the bridge. A short circuit in the power circuit or other signal lines will not be able to trigger the protection mechanism of the safety protection device, resulting in hazards such as skimming or tampering of swiping cards

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