JPH02150395A - Ic card - Google Patents

Abstract

PURPOSE:To make items other than a requested purpose impracticable without a necessity of inputting a password number by another person by a method wherein an another person use mode in which one time execution is passable is established, an operation passable state is maintained after establishing the mode, and the title IC card is made to reach an operation locked state after end of processing. CONSTITUTION:When an another person mode is established, a processing command P to be requested is inputted with a key. After storing in a memory, an OFF key is inputted and the title IC is lent out. Though the OFF key is inputted by this mode, the operation is not locked and an operation passable state is being kept even without referring to a password number. However, contents capable of being processed is only the processing command P inputted by a person in question. After end of processing, the operation is automatically locked and the IC returns to an initial state. Therefore, processing may be requested on another person without a necessity of counting the password number and further, there is no fear of using the IC card arbitrarily for items other than requested processing.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an IC card that can be lent to others without knowing the personal identification number and that prevents unauthorized use.

<Prior Art> Conventionally, in order to prevent unauthorized use of an IC card, a password known only to the cardholder is set, and a process cannot be executed unless the password is entered accurately.

<Problems to be Solved by the Invention> However, in the conventional configuration, in order to use an IC card, a PIN number must be entered first, and the PIN number is usually fixed and the user can freely use it. It cannot be changed.

In order to be able to use the IC card borrowed by another person when it is necessary to lend it to another person, such as when requesting processing, the owner who requested the processing must tell the person who lent it the PIN number. Also, once the device was lent, it was impossible to prevent it from being used for purposes other than the requested process, which caused a security problem.

Means for Solving the Problems> In order to solve the above-mentioned problems, the present invention provides a third party use mode in which a processing routine based on processing instructions input in advance can be executed once; The present invention provides an IC card which is characterized in that it maintains an operable state and that it is brought into an operation locked state after a preset manual processing routine is completed.

According to the present invention, after setting the other person use mode,
The operation lock is released even if the off key is operated, and even if the owner sets the mode for use by others and lends the device to another person, the other person does not need to enter the password.

When the other person use mode is set, the operation of the IC card is automatically locked after the processing routine based on the processing command entered by the person in advance is executed, so that the person who borrowed the card cannot use the card as requested by the person. It cannot be executed for anything other than its intended purpose.

<Example> An example of the present invention will be described in detail below with reference to the drawings.

FIGS. 1(a) and 1(b) are diagrams showing the appearance of an IC card according to the present invention, in which (a) shows the front side and (b) shows the back side.

The surface of the IC card 1 has a magnetic stripe 4 and an embossed area 6. 8-bin terminals 5 for input/output are arranged, and a display LCD 2 and a key switch 3 are arranged on the back side.

FIG. 2 shows a schematic electrical block diagram of the present IC card. C
The PU 7a and the memory 7b are composed of a one-chip LSI 7, and a password is stored in a part of the memo IJ 7b. From the key switch 9, various input signals in addition to the user's personal use/other person use mode setting signal (described later) are sent to the CP.
Data sent to U7a and inputted or processed by the CPU is displayed on LCD8. IC
Data communication between the card and an external device is performed through the connect section 11. Note that a battery 10 supplies power to the CPU 7a, memory 7b, etc.

Next, the operation of this IC card will be explained using the flowchart shown in FIG.

After the owner inputs the ON key of the key switch 3 in step 1 (hereinafter step n will be referred to as Sn),
Enter your PIN number in step 2. In S3, the CPU 7a determines whether the input password is correct. If it is correct, the CPU 7a proceeds to S4 to release the operation lock and make it possible to accept processing instructions. However, if the password is incorrect in Japan, the process advances to Sl+, and if the error in the password is less than three times, the process returns to S2 again to receive the password. If the PIN number is entered incorrectly more than three times, the process proceeds to S12, where the IC card is invalidated and cannot be used thereafter. In this way, the chances of an unauthorized user discovering the PIN number by accident are reduced.

Next, after the operation lock is released in S4, the user/other person's use mode is designated in S5. This mode specification uses the principal mode key and the other person mode key of the key switch 3. The CPU 7a determines in S6 whether the personal use mode or the other person's use mode is selected, and if it is the personal use mode, the process proceeds to S7.

In this mode, it operates like a conventional IC card and performs processing A.

A plurality of processes such as process B... can be executed, and after the process is completed in S8, the operation is locked in 510 by manually pressing the OFF key in S9.

At this point, the IC card returns to its initial state.

By the way, if it is determined in S6 that the mode for use by others has been selected, the process proceeds to S+3 and CI) U is thereafter set to the mode for use by others. In this mode, in step S14, the user inputs the processing command P that he/she wishes to request to another person, stores it in the memory, and then inputs the OFF key in step 515 to lend it to another person. In this mode, even if the OFF key is input, the operation is not locked, and the operation is maintained even without verification of the password. Therefore, if the borrowed person inputs the ON key at 516, there is no need to verify the password and the process can be processed immediately. However, the content that the borrowed person can process is only the process P for the process command P input by the person himself at 314, and after executing the process at S17 and completing the process at S+8, the process is automatically executed at 519. The operation is locked and returns to the initial state. Therefore, even if the person who borrowed the device tries to use it illegally for purposes other than the requested processing, the user cannot use the device because the operation lock cannot be released unless the password is entered correctly in S2.

Effectiveness> Therefore, the owner of the IC card can request another person to count the PIN number and can keep the PIN number secret. Also, there is no fear that it will be used for purposes other than the requested processing.

[Brief explanation of the drawing]

Fig. 1 (a>(b) is a front view and rear view showing the appearance of an IC card according to the present invention. Fig. 2 is a schematic block diagram of its electric circuit. Fig. 3 shows the operation of the control section. It is a flowchart showing 3...Key switch, 7a...CPU, 7b...
Memory 0 (a) Pigeon 1 diagram (b) Agent Patent attorney Takeshi Sugiyama (and 1 other person) No. 23

Claims (3)

[Claims] 1. In an IC card that has a control unit and a storage unit that store and process data, and whose operation is unlocked by verifying a PIN code, the mode for use by another person, in which only preset and input processing routines can be executed, is different from the mode for use by the individual. An IC card equipped with a servant mode setting means that can be set by switching selections. 2. 2. The IC card according to claim 1, wherein the IC card maintains an operable state even if an off key is operated once after the other person's use mode is set. 3. 2. The IC card according to claim 1, wherein the IC card is brought into an operation lock state upon completion of execution of a processing routine inputted in advance.