JP2004086325A - Settlement terminal device with illegally altered detection function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a settlement terminal device which can effectively detect illegal alteration by a method suitable for a device having a magnetic card reading mechanism. <P>SOLUTION: A card reading means 14 reading identification information which is magnetically recorded in the magnetic card, a wiring sheet 143 which surrounds at least a part of the periphery of the magnetic card reading means 14 and in which wiring is stretched, a tampering detection means 134 detecting tampering of a casing, a storage means holding confidential information, an illegal alteration detection means deleting confidential information kept in the storage means when wiring of the wiring sheet 143 is changed or the tampering detection means 134 detects the tampering of the casing, and a wiring board 13 on which the storage means and the illegal alteration detection means are arranged are disposed in the casing. In the settlement terminal device, the wiring sheet 143 is installed only in the magnetic card reading means 14 whose alteration is comparatively easy, and illegal alteration can effectively be prevented with a simple structure. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a payment terminal that performs online payment by reading a credit number or the like recorded on a magnetic card, and in particular, is capable of detecting a modification applied to a payment terminal to illegally obtain a credit number or the like. .
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in payment using a credit card, an accident has often occurred in which a credit number magnetically recorded on the credit card is illegally read and misused. As shown in FIG. 7, the payment terminal 10 for a credit card has a slit 12 for inserting a card. When the credit card is inserted here and the credit card is pulled out along the slit 12, the magnetic recording portion of the credit card moves in contact with the magnetic head installed in the settlement terminal 10, and the credit number recorded in the magnetic recording portion is displayed. Read by a magnetic head.
The read credit number is sent to the payment server via the network together with the payment amount data input from the operation unit of the payment terminal 10, and the payment processing is performed online.
[0003]
The unauthorized reading of the credit number is performed by opening the main body case of the settlement terminal 10 and secretly installing a recording device for storing the data read by the magnetic head in this device. And the credit number recorded there is read out.
[0004]
In order to prevent such fraud, the conventional payment terminal has a micro switch that is turned off when the main body case is opened, and when the fraudster opens the main body case and the micro switch is turned off, it is stored in memory. It is configured such that confidential data such as an encryption key is erased and a payment operation to the payment server cannot be performed.
However, this is not perfect, and there is a risk that a hole may be made in the main body case with a drill or the like without opening the main body case, and illegal work may be performed therefrom.
[0005]
In order to cope with such a technique, Japanese Patent Application Laid-Open No. H11-353237 discloses that when a wire is stretched around the inner surface of a case and a hole is drilled in a main body case, the wire is disconnected, and the function of the device is accordingly reduced. An electronic transaction device configured to stop the transaction is described.
[0006]
[Problems to be solved by the invention]
However, there is a problem that the work of laying the wiring around the inner surface of the case having a complicated shape and having a large area is troublesome and costly.
[0007]
SUMMARY OF THE INVENTION The present invention has been made to solve the conventional problems, and has as its object to provide a payment terminal device capable of effectively detecting unauthorized modification by a method suitable for a device having a magnetic card reading mechanism. I have.
[0008]
[Means for Solving the Problems]
Therefore, in the settlement terminal device of the present invention, a magnetic card reading means for reading identification information magnetically recorded on a magnetic card, and a wiring line surrounding at least a part of the periphery of the magnetic card reading means are provided in the housing. Sheet, opening detection means for detecting the opening of the housing, storage means for holding information, and when a change occurs in the wiring of the wiring sheet, or when the opening detection means detects the opening of the housing, the storage means An unauthorized alteration detecting means for erasing held information and a wiring board on which at least a storage means and an unauthorized alteration detecting means are arranged are provided.
As described above, in this settlement terminal device, the wiring sheet is arranged only in the magnetic card reading means that is relatively easy to remodel, and illegal remodeling can be effectively prevented with a simple configuration.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
The payment terminal according to the embodiment of the present invention has the same outer shape as that of the related art (FIG. 7), and includes a wiring board 13 inside a main body case including a front case 15 and a back case 16 as shown in FIG. And a magnetic card reader 14 arranged on the periphery of the main body case.
[0010]
As shown in FIG. 2, the magnetic card reader 14 has a slit 141 through which a magnetic card passes, and a magnetic head 142 disposed at a position facing the slit 141. The left and right sides and the lower side of the portion where the 142 is arranged are covered with a perforation detector 143 that detects when a hole is made.
[0011]
As shown in FIG. 3, the perforation detection body 143 includes a metal plate 144 bent in a U-shape, and a flexible printed wiring board (FPC) 145 attached to the outside of the metal plate 144. ing. In the FPC 145, one continuous conductor is densely bent and wired, and constitutes a disconnection detection sheet.
The distal end of the signal line 146 derived from the magnetic head 142 is inserted into a socket 131 provided on the wiring board 13.
[0012]
A CPU 132 for controlling the operation of the payment terminal is mounted on the back surface of the wiring board 13 on which the socket 131 is arranged.
Further, in order to form an opening detection switch 134 for detecting the opening of the case, the conductor 133 is wired on the wiring board 13 at a fixed distance, and a contact piece 151 for short-circuiting between the conductors 133 is provided on the wiring board 13. (In this case, the wiring board 13 is fixed to the rear case 16) and is elastically fixed to another case (front case 15). When the front side case 15 is opened, the contact piece 151 fixed to the front side case 15 rises, the connection between the conductors 133 is disconnected, and the unsealing detection switch 134 is turned off. When the front case 15 is closed, the contact piece 151 connects between the conductors 133, and the unsealing detection switch 134 is turned on.
[0013]
FIG. 4 shows a configuration of an unauthorized alteration detection circuit in the payment terminal. In this circuit, the opening detection switch 134 and the wiring of the disconnection detection sheet (showing the developed state) by the FPC 145 are connected in series, and the OFF of the opening detection switch 134 or the wiring of the disconnection detection sheet 145 are connected. A detection circuit 17 for detecting disconnection and erasing confidential information in the memory 18 is connected. Although not shown, the detection circuit 17 and the memory 18 are provided on the wiring board 13.
[0014]
When an unauthorized person who intends to illicitly modify the payment terminal opens the main body case, the opening detection switch 134 is turned off, and the detection circuit 17 detects the disconnection and erases the confidential information in the memory 18. Therefore, the settlement operation of the settlement terminal is stopped. In addition, when a fraudulent person attempts to make a hole in the magnetic card reading unit 14 with a drill or the like in order to illegally remodel the magnetic head 142, which is relatively easy to remodel, the wiring of the FPC 145 is broken, and the detection circuit 17 This disconnection is detected and the confidential information in the memory 18 is deleted. Therefore, the settlement operation of the settlement terminal is stopped.
[0015]
In addition, in order to perform a tampering operation on the socket 131 to which the signal line 146 of the magnetic head 142 is connected, if a hole or the like is to be drilled from the back side of the settlement terminal, the CPU 132 and the wiring board 13 that control the operation of the settlement terminal are changed. The payment operation of the payment terminal is stopped because it is destroyed.
In addition, when a hole is made from the front side where the operation unit of the payment terminal is located, the hole is easily found.
[0016]
As described above, in this settlement terminal, the unauthorized operation by opening the main body case is prevented by the opening detection switch 134, and the unauthorized operation due to the perforation of the magnetic head unit 142 is performed by the magnetic card reading unit 14. This is prevented by covering with a disconnection detection sheet 145.
[0017]
It is difficult to read out the signal from the wiring board 13, and therefore, there is almost no possibility that the signal is read out from the wiring board 13 as long as the remodeling for opening the main body case and performing the illegal operation is prevented. On the other hand, although the remodeling of the magnetic head portion is relatively easy, since the magnetic head portion is covered with the disconnection detection sheet 145, unauthorized manipulation due to perforation can be eliminated.
Thus, in this payment terminal, unauthorized modification can be prevented by simple and effective means suitable for a payment terminal having a magnetic card reading mechanism.
[0018]
Here, the disconnection detection sheet 145 of the FPC is attached to the metal plate 144, and the magnetic card reader 14 is covered with the metal plate 144. However, the magnetic card reader 14 is covered with only the disconnection detection sheet 145. Is also good. However, since the provision of the metal plate 144 has a stronger resistance to perforation by a drill or the like, unauthorized modification can be made more difficult.
[0019]
Further, a micro switch may be used for the opening detection switch 134 as in a conventional device.
In addition, as shown in FIG. 5, there is a possibility that the wrongdoer performs a work of short-circuiting the disconnection detection sheet 145 before breaking the disconnection detection sheet 145. At this time, if the detection circuit 17 detects only the disconnection, the illegal operation cannot be detected. In this case, as shown in FIG. 5, if a resistance detection circuit 171 for detecting a change in the resistance value is arranged as a detection circuit, when the disconnection detection sheet 145 is short-circuited, the change in the resistance value of the unauthorized alteration detection circuit is detected. Unauthorized manipulation can be detected.
In addition, a high-frequency signal is supplied to the unauthorized alteration detection circuit, and a phenomenon caused by a change in capacitance when a human finger comes into contact with the wiring of the disconnection detection sheet 145, for example, a change in frequency is detected to detect unauthorized manipulation. You may do it.
[0020]
Also, as shown in FIG. 6, by providing a plurality of wirings 147, 148, 149 and a plurality of opening detection switches 135, 136, 137 on the disconnection detection sheet 145, an unauthorized connection that short-circuits the disconnection detection sheet is provided. It is possible to make it difficult to carry out unauthorized work such as short-circuiting a work or an opening detection switch. Further, in this case, the opening detection switches 135, 136, and 137 may be bridged by solder at the time of reflow while leaving one of them. However, it is up to the manufacturing site to decide which to bridge. In this case, since it is uncertain which one will be the actual opening detection switch, it is possible to confuse an unauthorized person trying to short-circuit the opening detection switch.
[0021]
【The invention's effect】
As is apparent from the above description, the payment terminal of the present invention can prevent unauthorized alteration by a simple and effective means suitable for an apparatus having a magnetic card reading mechanism. In this apparatus, since the disconnection detection sheet is used only in a narrow portion covering the magnetic head, the work of installing the disconnection detection sheet is simple, and the cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating an internal configuration of a payment terminal according to an embodiment of the present invention. FIG. 2 is a diagram illustrating a magnetic card reading unit and a wiring board of the payment terminal according to an embodiment of the present invention. FIG. 4 is a diagram showing a configuration of a tampering detection circuit according to an embodiment of the present invention. FIG. 5 is a diagram showing a configuration of a tampering detection circuit according to an embodiment of the present invention. FIG. 6 is a diagram showing a tampering detection circuit having a plurality of opening detection switches and disconnection detection wiring in the embodiment of the present invention. FIG. 7 is a perspective view showing a conventional payment terminal.
DESCRIPTION OF SYMBOLS 10 Payment terminal 12 Slit 13 Wiring board 14 Magnetic card reading part 15 Front side case 16 Back side case 17 Detection circuit 18 Memory 131 Socket 132 CPU
133 conductor 134 opening detection switch 135 opening detection switch 136 opening detection switch 137 opening detection switch 141 slit 142 magnetic head 143 perforation detection body 144 metal plate 145 flexible printed wiring board (disconnection detection sheet)
146 Signal line 147 Disconnection detection sheet wiring 148 Disconnection detection sheet wiring 149 Disconnection detection sheet wiring 150 Short circuit 151 Contact piece 171 Resistance detection circuit

Claims (9)

Inside the housing,
Magnetic card reading means for reading identification information magnetically recorded on the magnetic card;
A wiring sheet that surrounds at least a part of the periphery of the magnetic card reading means and has a wiring line;
Opening detection means for detecting opening of the housing;
Storage means for holding information;
When a change occurs in the wiring of the wiring sheet, or when the unsealing detection unit detects the unsealing of the housing, an unauthorized tampering detection unit that erases information held in the storage unit,
A settlement terminal device comprising at least a wiring board on which the storage means and the unauthorized alteration detection means are arranged. The settlement terminal device according to claim 1, wherein the wiring sheet is attached to a metal plate surrounding at least a part of a periphery of the magnetic card reading unit. The unauthorized alteration detection means erases information held in the storage means when the wiring of the wiring sheet is cut, or when the unsealing detection means detects opening of the housing. The settlement terminal device according to claim 1. The unauthorized alteration detection means erases information held in the storage means when the resistance value of the wiring sheet changes or when the unsealing detection means detects opening of the housing. The settlement terminal device according to claim 1. The settlement terminal device according to any one of claims 1 to 4, wherein the wiring of the wiring sheet is formed of a single stretched conductor. The settlement terminal device according to any one of claims 1 to 4, wherein the wiring of the wiring sheet is formed of a plurality of conductors stretched. 7. The method according to claim 1, wherein said opening detection means comprises one opening detection means arbitrarily selected from a plurality of said opening detection means, and the remaining opening detection means are short-circuited. The settlement terminal device according to any one of the above. The settlement terminal device according to any one of claims 1 to 7, wherein the magnetic card reading means is electrically connected to the wiring board on an operation surface side of the housing. 9. The settlement terminal device according to claim 8, wherein a CPU is mounted on a back surface of the wiring board at a position electrically connected to the magnetic card reading unit.

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