JPH11161749A - Portable terminal for ic card read/write - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable terminal for IC card read/write for preventing a personal identification number from being decoded by surrounding people at the time of inputting the personal identification number, and for safely processing settlement. SOLUTION: This terminal executes settlement under a condition that a correct personal identification number is inputted through a ten key 5a. At this time, when the insertion of an IC card 6 is detected, and a customer inputs the personal identification number, an array of figures of the ten key 5a is selected from a key array table and changed each time so that the figures of the ten key 5a at the pressed positions can be prevented from being decoded. Also, after the end of input of the personal identification number, the changed figures of the ten key 5a are returned to the initialized array, and the portable terminal 1 for IC card read/write is returned to a staff in the initialized array state so that a following accounting processing such as the input of a sales sum can be made easy by the staff, and incorrect input can be preliminarily prevented. Thus, settlement by the IC card 6 can be safely processed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable terminal for reading and writing an IC card used in a store where payment is made with an IC card functioning as electronic money.

[0002]

2. Description of the Related Art At present, a method of making a payment by a card instead of cash is widely known. In particular, IC cards that can be electronically settled instantly are expected to rapidly spread in the future. Conventionally, it is convenient to purchase small lots in a supermarket or the like, which has been unfamiliar to card payments, and it is not necessary to prepare coins. Therefore, there is a great merit for both customers and stores. A handy terminal, which is a portable terminal for reading and writing an IC card, is one of those that reads and writes information stored in such an IC card. This handy terminal allows the customer to use an IC
After inserting the card and inputting the personal identification number, the card is handed over to the clerk, and the clerk who is handed over performs the accounting process to settle the payment.

A conventional example of such a handy terminal will be described below with reference to FIG. As shown in FIG. 7, on the surface of the device main body 21 of the handy terminal 20, a display unit 22 formed by a liquid crystal display (LCD), a function key 23 including a plurality of keys, and a numeric keypad 24 are provided. And a keyboard 25 are provided in order. The numeric keypad 24 is a button-type key, each of which protrudes independently, with a number stamped thereon. Further, an IC card insertion slot 27 of a card reader / writer (not shown) for reading and writing the IC card 26 is formed at a tip end near the display section 22 of the apparatus main body 21.

[0004]

[0007] However, when the customer
When inputting a personal identification number with the handy terminal 20 as shown in FIG. 1, the numeric keypad 24 of the keyboard 25 is depressed, and the input is performed. Therefore, when inputting the personal identification number, the personal identification number may be interpreted by a clerk or the like. For this reason, there has been a problem that security considerations such as confidentiality of personal identification numbers are lacking.

An object of the present invention is to provide a portable terminal for IC card read / write which can prevent the password from being read from the surroundings when the password is input, and can safely process the settlement by the IC card. That is.

[0006]

According to the first aspect of the present invention,
If the correct password has been entered using the numeric keypad,
In an IC card read / write portable terminal that reads and writes data to and from a C card, the numeric keypad number arrangement is changed at the time of inputting the password, and the changed numeric keypad number array is changed after the password input is completed. Change again.

Therefore, when inputting the password, the arrangement of the numeric keys on the numeric keypad is changed, so that the password is not read from the arrangement position of the pressed numeric keypad.
In addition, after the input of the personal identification number is completed, the arrangement of the changed numeric keys on the numeric keypad is changed again. For example, if the numeric keypad is changed to a conventional numeric keypad, the subsequent accounting processing is facilitated.

[0008] The invention according to claim 2 is the invention according to claim 1.
In the portable terminal for C card read / write, a numeric keypad was formed by a liquid crystal display with a touch panel.

Therefore, since the numeric keypad is formed by a liquid crystal display with a touch panel, the arrangement of numbers can be easily changed, and the displayed numbers are difficult to read from the surroundings due to the visible directivity of the liquid crystal display. .

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. The portable terminal for reading and writing an IC card according to the present embodiment is applied as a handy terminal operated by the customer himself / herself when the customer uses the IC card for settlement at a store or the like. Here, FIG. 1 is an external perspective view showing the handy terminal 1. As shown in FIG. 1, a display unit 3 which is a liquid crystal display, a function key 4 composed of a plurality of keys, and a keyboard 5 mainly used as numeric keys are provided in this order on the surface of the apparatus main body 2. I have. Also,
An IC card insertion slot 8 of a card reader / writer 7 (see FIG. 3) which has a built-in non-volatile memory and reads and writes an IC card 6 is formed at a tip end near the display section 3 of the apparatus main body 2. I have.

FIG. 2 is a plan view showing the keyboard 5. The keyboard 5 is formed by a liquid crystal display with a touch panel, and its display screen is divided into 11 parts. As shown in FIG. 2, the display screens divided into 11 are, as initial settings for normal display, “9”, “8”, “7” leftward from the upper right and “6” leftward one step down. "5""4", further down one step to the left "3""2""1", for the bottom, "0" left
The numeric keypad 5a is displayed in an arrangement of "0" and "0".

Next, the electrical connection of each part built in the handy terminal 1 will be described with reference to FIG. The handy terminal 1 has a built-in microcomputer 9 and this microcomputer 9
Drives and controls each unit. The microcomputer 9 includes a ROM 12 for storing fixed data such as a control program in advance and a RAM 13 for rewritably storing various data via a bus line 11 such as an address bus and a data bus. Are connected and configured. The RAM 13 performs functions such as a work area.

The ROM 12 stores a key arrangement table T. FIG. 4 is a schematic diagram showing a table structure of the key arrangement table T. This key layout table T
The numbers assigned to the numeric keypad 5a divided into ten parts on the keyboard 5 are arranged at random, and are stored at random as a key arrangement t. These arrays t
The first one is stored in the array t1, the second stored is the array t2, and the one stored in the n-th is the array tn. Here, as the number n of the array t stored in the key array table T, an array t with a maximum of “n = 39,916,800” in the case of the ten-key numeric keypad 5a can be considered.

Further, since the control program is stored in the ROM 12, the R
The control program stored in the OM 12 is written into the RAM 13, and the microcomputer 9 enters a state where the driving of each unit can be controlled. The components that are driven and controlled by the microcomputer 9 will be described below.

The display unit 3 is connected to the bus line 11 via the display controller 14, and when display data from the microcomputer 9 is input to the display controller 14, the display unit 3 is driven by the display controller 14 to display predetermined items.

The keyboard 5 is connected to the bus line 11 via a keyboard controller 15, and inputs a signal corresponding to a key pressed by the operation of the keyboard controller 15 to the microcomputer 9.

The card reader / writer 7 is connected to the bus line 11 via the reader / writer controller 16, and when a signal from the microcomputer 9 is input to the reader / writer controller 16, writes data corresponding to the signal to the IC card 6. . Further, a signal corresponding to the data of the IC card 6 read by the operation of the reader / writer controller 16 is input to the microcomputer 9.

Further, the handy terminal 1 has a PO
An interface (hereinafter, I / F) 17 for wirelessly communicating various data with an external device such as an S terminal is provided. The interface 17 is connected to the bus line 11 and is driven and controlled by the microcomputer 9.

Here, a function that the control program stored in the ROM 12 causes the microcomputer 9 to execute will be described. A description of the same functions as the processing performed by the conventional handy terminal 1 will be omitted, and the flow of the payment processing which is a characteristic function of the present invention will be described below.

FIG. 5 is a flowchart schematically showing the flow of the settlement process. First, in step S1, the process waits until insertion of the IC card 6 into the card reader / writer 7 is detected. The customer has an IC card 6 at the store
In order to make a payment, the handy terminal 1 is handed to the customer from the clerk, and then the customer inserts the IC card 6 into the IC card slot 8 of the handy terminal 1 to which the handy terminal 1 has been handed. The insertion of the IC card 6 is detected by a sensor (not shown) (Y in step S1).

Next, the pointer p (initial value 0) indicating the array t stored in the key array table T is incremented by 1 and stored in a predetermined area of the RAM 13 (step S2). If the incremented pointer p is smaller than the number n of the arrays t stored in the key array table T (Y in step S3), the key array table T
Is selected (step S5), and the numeric keypad 5a of the keyboard 5 is selected according to the selected array tp.
Are set by assigning numbers (step S6). Therefore, for example, when the pointer p is “1”, the first array t1 is selected and changed from the key array table T. Here, FIG. 6 is a plan view showing an example of the numeric keypad 5a in which the arrangement of numbers has been changed. As shown in FIG.
In accordance with the selected array t1, "3", "7", "2", leftward, "0", "8", "5", leftward, "1", "5", and further leftward from the top right of the top of the display screen The numbers assigned to the numeric keypad 5a are changed in the order of "00", "9", "6", and "4", "1" for the lowermost row in the left direction.

The pointer p incremented by one
Is larger than the number n of the arrays t stored in the key array table T (N in step S3), the pointer p is initialized and the process returns to step S2.

When the numeric keypad 5a is changed (step S
6) Wait until a password is input (step S)
7). When the password is input by pressing the numeric keypad 5a of the keyboard 5 (Y in step S7), it is determined whether the password stored in the IC card 6 and the input password are the same. (Step S8).
If they are the same, it is determined that the password is correct (Y in step S8), and the process proceeds to step S9. If they are not the same (N in step S8), error processing is performed.

Thereafter, the numbers on the numeric keypad 5a are returned to the default arrangement (step S9), and the process waits until a sales amount is input (step S10). In this state, the handy terminal 1 is handed to the clerk.

When the sales amount is input by pressing the numeric keypad 5a of the keyboard 5 (Y in step S10), the I in the card reader / writer 7 corresponds to the sales amount.
The value is subtracted from the C card 6, and the process ends.

Here, every time when the insertion of the IC card 6 is detected and the customer inputs a personal identification number, the sequence t of numbers on the numeric keypad 5a is selected from the key layout table T and changed. Surrounding clerks and the like cannot read the password from the arrangement position of the numbers on the numeric keypad 5a. When the customer inputs a correct password, the number on the numeric keypad 5a is returned to the default setting, so that the customer can recognize that the correct password has been input.

Further, after the input of the personal identification number is completed, the changed number on the numeric keypad 5a is returned to the default setting array, and the handy terminal 1 is handed to the clerk in the initial setting state, so that the ordinary numeric keypad 5a is provided. With this arrangement, the clerk can easily perform the subsequent accounting processing such as inputting the sales amount, so that the operability is not changed from the conventional one and the input error can be prevented beforehand. In addition, at this time, even if the clerk stores the input position of the customer, the clerk cannot know the arrangement at the time of the input.

Further, since the numeric keypad 5a is formed by a liquid crystal display with a touch panel, the arrangement of the numbers can be easily changed, and the displayed numbers can be read by surrounding clerks or the like by the visible directivity of the liquid crystal display. It is not necessary to operate the keypad 5a while hiding it.

[0029]

According to the first aspect of the present invention, by changing the arrangement of the numeric keys on the numeric keypad at the time of inputting the personal identification number, the identification number cannot be read from the arrangement position of the pressed numeric keypad. Therefore, it is possible to prevent the security code from being read from the surroundings when the security code is input, and to change the arrangement of the changed numeric keys on the numeric keypad after the security code has been input, for example, in the conventional manner. By changing to the numeric keypad arrangement, inputting errors are prevented beforehand by facilitating the subsequent accounting processing, so that the payment by the IC card can be processed safely.

According to the second aspect of the present invention, in the portable terminal for reading and writing an IC card according to the first aspect, since the numeric keypad is formed by a liquid crystal display with a touch panel, the arrangement of numbers can be easily changed. Since the number displayed by the visible directivity of the liquid crystal display is made difficult to read from the surroundings, the password can be made even harder to read from the surroundings when the password is input.

[Brief description of the drawings]

FIG. 1 is an external perspective view showing a handy terminal according to an embodiment of the present invention.

FIG. 2 is a plan view showing a keyboard.

FIG. 3 is a block diagram showing an electrical connection of each unit built in the handy terminal.

FIG. 4 is a schematic diagram showing a table structure of a key array table.

FIG. 5 is a flowchart schematically showing a flow of a settlement process.

FIG. 6 is a plan view showing an example of a numeric keypad in which the arrangement of numbers has been changed.

FIG. 7 is an external perspective view showing a conventional handy terminal.

[Explanation of symbols]

 5a Numeric keypad 6 IC card

Claims (2)

[Claims] 1. An IC card read / write portable terminal for reading and writing data to and from an IC card on condition that a correct password has been entered with a numeric keypad. And changing the arrangement of the changed numbers on the numeric keypad after the completion of the input of the personal identification number. 2. The portable terminal for reading / writing an IC card according to claim 1, wherein the numeric keypad is formed by a liquid crystal display with a touch panel.