JP3772599B2 - Terminal device, network system, and recording medium recording monitoring program - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention records a terminal device that performs data communication with a host device connected via a data communication line, a network system including the terminal device and the host device, and a monitoring program applied to the terminal device The recording medium.
[0002]
[Prior art]
Conventionally, when processing a credit transaction at a store or the like, a CAT (Credit Authorization Terminal) has been used as a terminal device that requires a credit card company (hereinafter simply referred to as a card company) to authenticate the transaction. Yes. As is well known, the CAT sends the card data read from the credit card and the input transaction data (transaction amount, etc.) to the card company (host device) via the public network and requests authentication of the transaction. , An apparatus for processing a transaction according to an authentication result for the request.
[0003]
Thus, since the CAT is a device that handles card data read from a credit card at the time of transaction processing, the card data handled by the main body must be managed so as not to be misused by others. That is, it is necessary to prevent card data from being illegally taken out from the CAT main body and misusing the card data taken out to the outside. Therefore, it should be noted that the CAT main body is modified so that the card data read from the credit card can be taken out. For example, a storage circuit for accumulating the card data read from the credit card for each transaction is attached to the CAT main body, and the card data read from the credit card handled by the CAT during this time is collected by collecting the storage circuit later. Can be taken out.
[0004]
Therefore, in the past, when making any unauthorized modification to the CAT main body, it was noted that the cover of the main body of the apparatus had to be opened, and the cover of the main body of the apparatus was detected using a microswitch or a light receiving element that detects ambient light A function to detect the opening of the main body is provided, and when the main body cover is opened by this function, the main program that controls the operation of the main body is deleted. It was configured to be impossible.
[0005]
[Problems to be solved by the invention]
However, in the conventional configuration, it was only detected whether the cover of the main body was opened using a micro switch, a light receiving element, etc., so that the micro switch does not work when opening the cover, When the main body cover is opened in a dark place where the light receiving element cannot detect ambient light, it cannot be detected that the cover has been opened. That is, there is a concern that the cover may be opened by crafting so that the function of detecting whether the cover of the apparatus main body has been opened does not work.
[0006]
Regardless of the card data, illegally taking out (stealing) data handled by the data processing device (terminal device) from the main body and misusing it is a legally punishable criminal act.
[0007]
  An object of the present invention is to determine that an abnormal situation has occurred when the power is turned on during a period when the main unit is not normally used, and notify the higher-level device to that effect.LetRecords terminal devices and monitoring control programs that improve the security of data handled by the main unit by allowing maintenance personnel to quickly check whether the device has been tampered with. Is to provide a recording medium.
[0008]
Another object of the present invention is to provide a network system in which the terminal device and the host device are connected by a data communication line.
[0009]
[Means for Solving the Problems]
The terminal device of the present invention has the following configuration in order to solve the above problems.
[0010]
(1) In a terminal device that performs data communication with a host device connected via a data communication line,
A switch for turning on / off the operation power to the main body,
A time zone storage means for storing either a monitoring time zone in which use of the main body is restricted or an operation time zone in which use is not restricted;
A time measuring means for measuring the current time;
When the switch is operated and the operation power supply to the main body is turned on, the time measured by the time measuring means is the monitoring time zone stored in the time zone storage means or not the operation time zone An abnormality notification means for determining that an abnormal situation has occurred and notifying the host device of the occurrence of the abnormal situation.
[0011]
In the above configuration, when the time when the switch for turning on / off the operating power supply for the device main body is turned on is a monitoring time zone in which use of the main body is restricted (or when it is not an operation time zone in which use is not restricted), It is determined that an abnormal situation has occurred and notifies the host device connected via the data communication line to that effect (occurrence of an abnormal situation).
[0012]
Here, the monitoring time zone is a time zone in which it is considered unlikely that the main body will be used in the usage environment of the device main body, and conversely, the operating time body can be used in the usage environment of the main device It is a time zone with high nature. Specifically, if it is a terminal device used in a store, the midnight after the store is closed becomes a monitoring time zone. Moreover, when it is not the operation time zone which does not restrict | limit use about a main body, it becomes the same time zone as the said monitoring time zone so that it may become clear from said description.
[0013]
The reason that the main unit is turned on during this monitoring time period is that the terminal device user may turn on the power for some reason. It is very likely that the operation of the main body of the apparatus is being checked to check whether it has been performed correctly. As described above, since the present invention is configured to notify the host device of the occurrence of the abnormal situation, in response to the notification, the maintenance device or the like can quickly check whether the terminal device has been illegally modified. It is possible to limit the subsequent use (the terminal device can be collected if unauthorized modification is made). Therefore, the security of data handled by the terminal device can be improved.
[0014]
  Further, the monitoring time zone is not set to the same time zone every day, but may be set for each day of the week or may be set for each date..
  (2) In a terminal device that performs data communication with a host device connected via a data communication line,
  A switch for turning on / off the operation power to the main body,
  All processes executed on the main unit from when the switch is operated until the operating power supply to the main unit is turned on until the operating power source is turned off.An error occurred inAn abnormality notification means for determining that an abnormal situation has occurred and notifying the host device of the occurrence of the abnormal situation.
[0015]
In the above configuration, when an error such as a connection failure of the data communication line occurs in all the processes executed in the main unit after the switch is operated and the operating power source is turned on until the operating power source is turned off. It is determined that an abnormal situation has occurred, and the host device is notified.
[0016]
Normally, the operation power of the terminal device is turned on because the operator performs some processing (for example, transaction authentication processing or transaction totaling processing in CAT) at the terminal device. And, since the operation power supply for the main body is turned on and the operation power supply is turned off, errors such as poor connection of the data communication line occur in all processes executed in the main body. Although it may be out of order, there is a high possibility that the operator has intentionally generated an error. On the other hand, when a person who made an unauthorized modification to the main body performs an operation check as to whether or not the modification has been performed correctly, an error is intentionally generated (if communication with a host device or the like is It will be known that a modification was made.) Therefore, in such a case, if the occurrence of an abnormal situation is notified to the host device, it can be quickly confirmed whether the terminal device has been tampered with in response to the notification, and subsequent use can be restricted ( If the device has been tampered with, the terminal device can be recovered, and if the device body is broken, the broken device can be replaced. Therefore, the security of data handled by the terminal device can be improved.
[0017]
(3) The abnormality notification means determines that an abnormal situation has occurred even when there is no processing executed in the main body between the time when the operating power is turned on and the time when the operating power is turned off. The occurrence of the abnormal situation is notified.
[0018]
In this configuration, it is determined that an abnormal situation has occurred even when there is no processing executed in the main body, and the occurrence of the abnormal situation is notified to the host device.
[0019]
  (4)Time zone setting means for setting the monitoring time zone or the operation time zone is provided.
  In the above configuration, the monitoring time zone or the operation time zone can be set according to the usage environment of the terminal device.
  (5)After determining that the abnormal situation has occurred, the abnormality notification means first notifies the occurrence of the abnormal situation when performing data communication with the host device.
[0020]
In the above configuration, after the occurrence of the abnormal situation, the occurrence of the abnormal situation is notified when data communication is first performed with the higher order apparatus. This can be notified. Therefore, it is possible to promptly correspond to the maintenance staff or the like for the terminal device that has been illegally modified.
[0021]
  (6A transaction authentication means for transmitting the input transaction information to the host device and obtaining an authentication result for the transaction of the transaction information from the host device;
  The abnormality notification means continuously notifies the occurrence of the abnormal situation after the transaction authentication means is executed.
[0022]
In the above configuration, the input transaction information is transmitted to the host device, and the occurrence of the abnormal situation is notified during the transaction authentication process for obtaining an authentication result for the transaction of the transaction information from the host device.
[0023]
  (7) A higher-level device connected at the time of execution of the transaction authentication means and a higher-level device connected at the time of execution of the abnormality notification means are different devices.
[0024]
  In the above configuration, since the host device connected at the time of execution of the transaction authentication unit and the host device connected at the time of execution of the abnormality notification unit are different devices, an existing credit transaction system (a network between a store and a credit card company) This can be realized with a simple change by providing a higher-level device that notifies the occurrence of the above abnormal situation without modifying the system) (without modifying the card company's host device)..
[0026]
  Note that a network system according to an eighth aspect is a network including the terminal device according to any one of the above (1) to (7) and a host device connected to the terminal device via a data communication line. System,
  The invention described in claims 9 and 10 records a monitoring program corresponding to the invention described in (1) and (2) above, respectively.Computer readableIt is a recording medium.
[0027]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a diagram showing a configuration of a credit transaction system according to an embodiment of the present invention. In the credit transaction system, a plurality of CATs 1 installed in each store are connected to a public line network 5, and a transaction authentication process with a host device 2 of a credit card company (hereinafter simply referred to as a card company). A network that can do this is configured. In this credit transaction system, a well-known CAFIS (Credit And Finance Information Switching System) (not shown) is used, and the CAT 1 and the host device 2 are connected via the CAFIS. 3 is a maintenance management apparatus connected to the public network 5, and the CAT 1 is provided with a function of performing data communication with the maintenance management apparatus 3 via the public network 5. .
[0028]
FIG. 2 is a diagram showing an external appearance of a CAT according to an embodiment of the present invention, and FIG. 3 is a block diagram showing a configuration of the CAT. The CAT 1 is input by a control unit 11 that controls the operation of the main body, a keyboard 12 on which keys for input operations by an operator (such as a store clerk), and a card reader 13 that reads card data stored in a credit card are input. A display unit 14 for displaying the transaction data and the like, a printer 15 for issuing a transaction slip on which transaction contents are printed, and a communication unit 16 for controlling data communication executed via the public line network 5. The control unit 11 is provided with a storage unit having a ROM, a RAM, and the like, and a timer function for measuring the current time. In addition, as shown in FIG. 2, a power switch 20 for turning on / off the operating power supply to the main body is disposed on the side surface of the main body. The control unit 11 is backed up by a battery (not shown).
[0029]
The CAT 1 is provided with a micro switch (or a light receiving element) that detects that the main body cover has been opened. Note that the description of the position where the microswitch is arranged is omitted here. When this micro switch detects that the main body cover has been opened, the main program for controlling the operation of the main body is erased, and the main body cannot be used thereafter (the prior art) The function described in the column of (1) is provided.
[0030]
Further, the CAT 1 stores a monitoring time zone preset in the control unit 2. The monitoring time zone is a time zone in which the CAT1 is considered not to be used in the usage environment of the CAT1 main body. For example, if the store is open from 10:00 am to 8:00 pm, the monitoring time zone is suitable from 1 am to 6:00 am, in which the store is thought to have no clerk. The reason for not including the store hours, from 6 am to 10 am and from 8 pm to 1 am the next day, was not included in the monitoring hours because of the store opening preparations and closing operations. This is because there is a high possibility of operating CAT1. Each CAT1 stores a terminal ID, and the host device (the host device 2 or the maintenance management device 3) can identify the store in which the CAT1 is installed from the terminal ID.
[0031]
  The operation of the credit transaction system according to this embodiment will be described below. FIG. 4 is a flowchart showing the operation of the CAT according to this embodiment. When the power switch 20 is operated and the supply of operating power to the main body is started (n1), the CAT1 determines whether or not the current time measured by the control unit 2 is a monitoring time zone (n2). . If the current time is not the monitoring time zone at n2, the process proceeds to n8. If it is determined at n2 that it is the monitoring time zone, the control unit 2 determines whether the monitoring flag is on (n3). The monitoring flag is a flag indicating whether or not an abnormal situation has occurred.ofCAT1 determines that an abnormal situation has occurred when the power supply of the main body is turned on during the monitoring time period. If the monitoring flag is turned off at n3, the monitoring flag is turned on and the current time is stored (n4, n5). Further, the value of the counter for counting the number of occurrences of abnormal situations is set to 1 (n6). If the monitoring flag is already turned on at n3, the value of the counter for counting the number of occurrences of the abnormal situation is incremented by 1 (n7).
[0032]
When any input operation is performed on the keyboard 12 (n8), processing corresponding to the input (for example, credit transaction processing) is executed (n9), and the power switch 20 is operated to turn off the operation power to the main body. Then, this process is terminated (n10).
[0033]
As described above, the CAT 1 of this embodiment is a monitor that indicates that an abnormal situation has occurred when the supply of operating power to the main body is started (when the power switch 20 is operated) during a preset monitoring time period. Turn on the flag. In addition, the number of occurrences of an abnormal situation (the number of times the power is turned on during the monitoring time period) and the time when the abnormal situation first occurred are stored in the control unit 11 as monitoring information (monitoring log). This monitoring information is transmitted to the host device as shown below.
[0034]
The power switch 20 is operated during the monitoring time period, and the supply of operating power to the main body is started because the store clerk operated the power switch 20 for some reason that occurred at the store where the CAT 1 is installed. In some cases, it is much more likely that a person who has tampered with CAT1 has turned on the power to check the operation of CAT1 after remodeling. That is, the fact that the power is turned on in a time zone where the main body is not used in a normal use environment (that is, a monitoring time zone) is highly likely that the CAT 1 has been tampered with. .
[0035]
Next, the operation | movement at the time of the transaction processing in CAT1 concerning this embodiment is demonstrated. FIG. 5 is a flowchart showing processing at the time of transaction processing in the CAT according to this embodiment. This process is executed when the operator inputs transaction information at n8 shown in FIG.
[0036]
  When the CAT 1 accepts input of transaction data including the transaction amount on the keyboard 12 and accepts input of card data stored in a credit card (card used for transaction) in the card reader 13 (n 21, n 22), the card Dialing process to connect the line with the company host device 2U(N23). When the line with the host device 2 is connected (n24), a transaction authentication request message including the transaction data and card data input at n21 and n22 is transmitted to the host device 2 (n25). When the host device 2 receives the transaction authentication request message, the host device 2 performs an authentication process for determining whether or not the transaction is possible, and transmits an authentication result to the CAT 1. When the CAT 1 receives the authentication result (e.g. whether transaction is possible) from the host device 2 (n26), it disconnects the line with the host device 2 (n27).
[0037]
  The processes of n21 to n27 are transaction authentication processes performed in the known CAT1. The CAT 1 of this embodiment performs the following processing after the transaction authentication processing. When CAT1 disconnects the line with the host device 2 at n27, it determines whether the monitoring flag is on (n28). If the monitoring flag is on, that is, CAT1 detects the occurrence of the abnormal situation. If so, the following processes after n29 are executed. First, the CAT 1 performs a dialing process for connecting a line with the maintenance management apparatus 3 (n 29), and waits for a line with the maintenance management apparatus 3 to be connected (n 30). CAT1 is a maintenance management device3When the line is connected, the control unit11The terminal ID and the monitoring information (the time when the power was first turned on in the monitoring time zone and the number of times the power was turned on during the monitoring time zone) stored in the maintenance management device3(N31). Thereafter, CAT1 disconnects the line with the maintenance management device 3 and turns off the monitoring flag (n32, n33).
[0038]
  Then, CAT1 issues a transaction slip with the printer 15 based on the authentication result obtained from the host device 2 at n26 (n34), This process is terminated.
[0039]
  As described above, the CAT 1 according to this embodiment transmits the monitoring information to the maintenance management device 3 after the transaction authentication process with the host device 2 that is normally performed when the monitoring flag is turned on during the transaction processing. Therefore, operators of CAT1 (store clerks and customers who process transactions)managementIt is not noticed that the device 3 has been notified that an abnormal situation has occurred. Therefore, the customer does not feel uneasy, and the problem that the customer service deteriorates does not occur. In addition, when the CAT 1 communicates with the host device 2 for the first time after the occurrence of an abnormal situation (at the time of the first transaction processing), the maintenance management apparatus 3 is notified that the abnormal situation has occurred. It is possible to quickly recognize the CAT 1 that is likely to have been illegally modified in the management device 3. Then, it is possible to confirm whether or not the CAT 1 has been illegally modified by, for example, sending a maintenance staff to a store where the CAT 1 is likely to have been illegally modified. Therefore, it is possible to quickly respond to the CAT1 that has been illegally modified (if the illegal modification is performed, the CAT1 may be recovered), and the security of the card data handled by the CAT1 can be improved. .
[0040]
Further, since the monitoring time zone varies depending on the use environment of CAT1 (business hours of the store where the CAT1 is installed), the CAT1 is provided with a function for setting the monitoring time zone. FIG. 6 is a flowchart showing monitoring time zone setting processing. When a predetermined key operation is performed on the keyboard 12, the CAT1 shifts to a monitoring time setting mode. Then, CAT1 accepts an input of the monitoring time zone input from the keyboard 12 (n41), and displays the input monitoring time zone on the display unit 14 (n42). Note that key operations for shifting CAT1 to the monitoring time setting mode are not informed to the store clerk, and a maintenance time is set in consideration of the store's business hours when maintenance personnel install CAT1 in the store. is doing. That is, the store clerk or the like does not know that the monitoring time zone is set in CAT1, and does not know the operation for setting the monitoring time zone, so the monitoring time zone set in CAT1 is not known by the maintenance staff. There will be no change in between.
[0041]
In general, CAT 1 installed in a store is owned by a card company and is lent out to the store.
[0042]
When the execution key is operated, CAT1 sets the input monitoring time zone and ends this processing (n45). When the cancel key is operated, this process is terminated without changing the monitoring time zone (n44).
[0043]
As described above, since the usage environment of the CAT 1 is different for each store installed, the monitoring time zone can be set for each CAT 1. Therefore, since the monitoring time zone can be set according to the use environment, it is possible to efficiently detect the occurrence of an abnormal situation in CAT1.
[0044]
The monitoring time zone (or operation time zone) may be set for each day of the week, or may be set for each date. In this way, it is possible to set a monitoring time zone (or operation time zone) in accordance with a store holiday or the like.
[0045]
In the above embodiment, the monitoring time zone is set in the control unit 2, but an operation time zone may be set instead of the monitoring time zone. When the operation time zone is set, it is determined that an abnormal situation has occurred in the CAT 1 when the power switch 20 is operated and the supply of operating power to the main body is not in the operation time zone. What is necessary is just to perform the process after n3 shown in FIG. Here, the operation time zone is a time zone in which CAT1 is highly likely to be used, and the time other than the operation time zone is the monitoring time zone. Therefore, the same effects as those of the above embodiment are obtained.
[0046]
In addition, although the setting input of the monitoring time zone in the CAT 1 is performed with the keyboard 12, the setting may be performed from the maintenance management device 3.
[0047]
In the above embodiment, the occurrence of the abnormal situation is notified to the maintenance management apparatus 3 at the time of the first transaction processing (at the time of transaction authentication) after the occurrence of the abnormal situation is detected, but it is not a monitoring time zone at n2 in FIG. When it is determined that n28 to n32 shown in FIG. 5 may be executed. In other words, after the occurrence of an abnormal situation is detected, the occurrence of an abnormal situation may be notified when the power is first turned on at a time that is not in the monitoring time zone.
[0048]
Furthermore, in this embodiment, since the notification of the occurrence of an abnormal situation is not performed to the host device 2, but to the maintenance management device 3, an existing credit transaction system (between the store and the credit card company) This can be realized by a simple modification in which the maintenance device 3 for notifying the occurrence of the abnormal situation is provided without modifying the network system (without modifying the host device of the card company).
[0049]
Next, another embodiment of the present invention will be described. In the above embodiment, when the power supply to the main body is turned on during a preset monitoring time zone (or when the power supply to the main body is turned on in a time zone other than the operation time zone), an abnormal situation has occurred. In this embodiment, an abnormal situation occurred when an error such as a line connection failure occurred in all the processes executed in the main body between the time when the power was turned on and the time when the power was turned off. I am trying to judge. The CAT 1 of this embodiment has substantially the same configuration as that of the above embodiment.
[0050]
FIG. 7 is a flowchart showing the operation of the CAT 1 according to this embodiment. In FIG. 7, the same step number (n *) is assigned to the same process as in FIG. When the power switch 20 is operated and the supply of operating power to the main body is started (n1), the CAT1 determines whether the power flag is on (n51). If the power flag is turned on at n51, the processing from n3 to n7 is executed as described in the above embodiment, and if the power flag is off, the power flag is turned on at n52 and the process proceeds to n8. When any input operation is performed at n8, processing corresponding to the input is executed (n9). When the process executed at n9 ends normally, the power flag is turned off (n53, n54), and when an error such as a line connection failure occurs in the process executed at n9, the power flag is turned off. Return to n8 without doing.
[0051]
  As described above, in the CAT 1 of this embodiment, the power flag is turned on when the supply of the operating power to the main body is started, and an error occurs in the processing executed for the input operation performed on the main body after that. The power flag is turned off when the process ends normally without any error. Therefore, when an error such as a line connection failure occurs in all the processes executed in the main unit between the start and stop of the operation power supply to the main unit, or no processing is performed in the main unit. The power flag is not turned off when not executed. When the supply of operating power to the main body is started, if the power flag is on, n4In FIG. 5, a monitoring flag indicating that an abnormal situation has occurred is turned on (determined that an abnormal situation has occurred), and the occurrence of an abnormal situation is notified during the transaction processing shown in FIG.
[0052]
Note that the state of the power flag is held by the battery-backed control unit 11.
[0053]
Normally, the power of CAT1 is turned on to perform transaction authentication processing, transaction totalization processing, etc., but such processing is not performed, or an error occurs in all executed processing. When it occurred, it was determined that an abnormal situation occurred, and the host system was notified of the occurrence of the abnormal situation. Here, an error occurs in all the executed processes in most cases, either when the apparatus main body is out of order or when an operator intentionally generates an error. And when a person who has made an unauthorized modification to the main body performs an operation check as to whether or not the modification has been performed correctly, an error is intentionally generated and the process is not properly terminated. There is a high possibility that the main body has been modified even when an error occurs during processing.
[0054]
Since the CAT 1 of this embodiment is configured to notify the host device of the occurrence of an abnormal situation when there is a high possibility that the main body has been modified, the terminal device has been illegally modified in response to the notification. The use of CAT1 that has been illegally modified is restricted (the terminal device is collected if unauthorized modification is made), and the security of data handled by CAT1 is improved. be able to.
[0055]
【The invention's effect】
As described above, according to the present invention, it is illegal for the main body to be turned on during the time when the main body is not used in the usage environment of the apparatus main body (time that is not the monitoring time period or the operation time period). Since it is highly likely that the person who made the modification was checking the operation of the main body to confirm whether or not the modification was performed correctly, an abnormal situation occurred in such a case. Since the determination is made and the higher-level device is notified, it is possible to quickly check whether or not the terminal device has been illegally modified by dispatching maintenance personnel in response to the notification. . That is, it is possible to quickly cope with a terminal device that has a risk of being illegally modified, and it is possible to improve the security of data handled by the terminal device.
[0056]
In addition, when an error occurs in all processes executed in the main unit from the start of supply of operating power to the main unit until it is stopped, or when no processing is executed in the main unit, the main unit It is determined that an abnormal situation has occurred because it is highly probable that a person who has made an unauthorized modification to the device has performed an operation check of the device itself to confirm whether or not the modification has been performed correctly. In response to the notification, the maintenance device is dispatched in response to the notification to quickly check whether the terminal device has been illegally modified. The security of data handled by the device can be improved.
[0057]
Further, since the host device connected at the time of execution of the transaction authentication means and the host device connected at the time of execution of the abnormality notification means are different devices, an existing credit transaction system (a network system between a store and a credit card company) This can be realized by a simple change of adding a higher-level device that notifies the occurrence of the abnormal situation.
In addition, a monitoring time zone or an operation time zone can be set according to the usage environment of the terminal device.
[0058]
Furthermore, by applying the terminal device according to the present invention, it is possible to configure a network system in which the security of data handled in the terminal device is improved.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of a credit transaction processing system according to an embodiment of the present invention.
FIG. 2 is a diagram showing an external appearance of a CAT according to an embodiment of the present invention.
FIG. 3 is a block diagram showing a configuration of a CAT according to an embodiment of the present invention.
FIG. 4 is a flowchart showing the operation of the CAT according to the embodiment of the present invention.
FIG. 5 is a flowchart showing transaction authentication processing in the CAT according to the embodiment of the present invention.
FIG. 6 is a flowchart showing processing for setting a monitoring time in CAT according to the embodiment of the present invention.
FIG. 7 is a flowchart showing the operation of CAT which is another embodiment of the present invention.
[Explanation of symbols]
1-CAT
2-Host device
3-Maintenance management device
5-Public network
11-Control part
12-Keyboard
13-Card reader
16-Communication Department
20-Power switch

Claims (10)

In a terminal device that performs data communication with a host device connected via a data communication line,
A switch for turning on / off the operation power to the main body
A time zone storage means for storing either a monitoring time zone in which use of the main body is restricted or an operation time zone in which use is not restricted;
A time measuring means for measuring the current time;
When the switch is operated and the operation power supply to the main body is turned on, the time measured by the time measuring means is the monitoring time zone stored in the time zone storage means or not the operation time zone A terminal device comprising: an abnormality notification unit that determines that an abnormal situation has occurred and notifies the host device of the occurrence of the abnormal situation. In a terminal device that performs data communication with a host device connected via a data communication line,
A switch for turning on / off the operation power to the main body
Until it the switch is operated operating power to the main body operation power since the ON is turned off, it is determined that an abnormal situation has occurred when an error occurs Te all processing odor that performed in the body And an abnormality notification means for notifying the host device of the occurrence of the abnormal situation.   The abnormality notification means determines that an abnormal situation has occurred even when there is no processing executed in the main body between the time when the operating power is turned on and the time when the operating power is turned off. The terminal device according to claim 2, which notifies the occurrence of an abnormal situation. The terminal device according to claim 1, further comprising time zone setting means for setting the monitoring time zone or the operation time zone. The abnormality notification means, the after abnormality is determined to have occurred, according to any one of claims 1 to 4 for notifying occurrence of the abnormal situation when performing data communication with the first to the higher-level device Terminal equipment. A transaction authentication means for transmitting the input transaction information to the host device and obtaining an authentication result for the transaction information transaction from the host device;
The terminal device according to claim 5 , wherein the abnormality notification unit continuously notifies the occurrence of the abnormal situation after the transaction authentication unit is executed. 6. The terminal device according to claim 5 , wherein the host device connected at the time of execution of the transaction authentication unit is different from the host device connected at the time of execution of the abnormality notification unit. The terminal device according to any one of claims 1 to 7;
A network system comprising: a host device connected to the terminal device via a data communication line. A computer-readable recording medium that records a monitoring program applied to a terminal device that performs data communication with a host device connected via a data communication line,
The terminal device stores either the monitoring time zone in which use of the main body is restricted or the operation time zone in which use is not restricted,
When the current time is in the monitoring time zone where use of the main unit is restricted when the switch for turning on / off the main unit operating power is operated on the terminal device and the main unit is turned on, Or a first step of determining that an abnormal situation has occurred when it is not an operation time zone in which use is not restricted;
In the first step, when it is determined that the abnormal situation has occurred, a second step of notifying the higher-level device of the occurrence of the abnormal situation, and a computer reading recording a monitoring program for performing Possible recording media. A computer-readable recording medium that records a monitoring program applied to a terminal device that performs data communication with a host device connected via a data communication line,
To the terminal device, until the operation power from the operating power supply is turned relative to the body switch is operated to perform the operation power on / off with respect to the main body is turned off, e Te all processing odor that performed in the body A first step of determining that an abnormal situation has occurred when an error occurs;
In the first step, when it is determined that the abnormal situation has occurred, a second step of notifying the higher-level device of the occurrence of the abnormal situation, and a computer reading recording a monitoring program for performing Possible recording media

Images