JPH03105588A - Individual identification system - Google Patents

Abstract

PURPOSE:To make it difficult for a third person to decipher a personal identification number from the input operation of the personal identification number, and in addition, to simplify key input so as not to take time by installing a random numeral display device part at a position depressed than a front face. CONSTITUTION:Two pieces of one-digit numerals a random numeral generator 3c generates are displayed on a display part 3b, and the bearer of a card key-inputs his personal identification number after key-inputting the make-believe numerals of the portion of the number of digits displayed on the display device part 3b before he inputs the personal identification number. Afterwards, he key-inputs the make- believe numerals of the portion of the number of digits displayed on the display device part 3b, and finishes the input operation. In such case, since the display device part 3b is located at a position depressed than the front face, it comes not to be seen by the third person, and in addition, even in the case where the same personal identification number is inputted, since both the numerals and the number of the digits to be inputted at every one transaction are different, it is difficult for the third person to decipher the personal identification number from the input operation of the personal identification number of the bearer of the card. Thus, an individual identification system capable of efficient financial transaction can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to financial transactions such as cash withdrawals, etc.Currently, magnetic stripe cards (hereinafter abbreviated as cards) are widely used in personal identification systems. This card stores a PIN number that identifies the person carrying the card as the legitimate card holder when the card is used. When using this card for personal identification, for example, in a bank deposit withdrawal machine, the withdrawal machine reads the PIN number of the inserted card, then asks the cardholder for the PIN key, and then The PIN number entered manually from a keyboard with numbers, symbols, etc. engraved on the key tops as shown in Figure 4 is compared with the PIN number read from the card to confirm that the person carrying the card is the legitimate card holder. It determines what is going on, and then conducts subsequent transactions based on this. In this method, numbers, symbols, etc. are engraved on the key tops,
In addition, since the key arrangement is fixed, when the cardholder manually enters the PIN number, a third party can decipher the PIN number from nearby by using the cardholder's finger movements, thereby preventing theft. If a malicious third party gains access to this card for some reason, such as loss or other reasons, financial transactions can be made freely.

Therefore, in order to prevent this, Japanese Patent Laid-Open No. 63
As shown in Japanese Patent No. 143667, "Password Protection Device," a method has been proposed in which a secret user password is embedded in a random number specified by the device. In this method, the device specifies and displays the embedded position of the password in the random numbers generated, and when the user embeds his or her password in the specified part of the data and inputs it, the device extracts the password from the input value and displays it. Perform verification. Because the positions where the dummy data and the original password are embedded are different each time, it is difficult to see the password from behind the user when inputting it. Problems to be Solved by the Invention However, in conventional devices, the password or PIN number is decomposed and embedded in the random numbers generated by the device, so the manual keying method is complicated and cumbersome, and the manual keying method is time-consuming. Because various people who are not experts
The problem was that it was not suitable for financial transactions that required quick operation.

The present invention solves the above-mentioned problems, and makes it difficult for a third party to decipher the PIN number from the input operation of the card holder's PIN number, and the key is easy and time-saving. It provides a personal identification system that enables efficient financial transactions.

Means for Solving the Problems In order to solve the above problems, the personal identification system of the present invention includes a keyboard section consisting of a plurality of input keys with numbers engraved on the key tops, and a cardholder who manually enters a PIN number. 1 to display the number of digits of the fake number to be entered before entering.
a display section consisting of a digit number display and a one-digit number display that displays the number of digits of a fake number to be input after inputting the password; and a random one digit displayed on the display section. A random number generator that generates two numbers, data entered from the input keys of the keyboard section, and two random one-digit numbers generated by the random number generator, to generate the input password. The input data decoding means is provided to decode input data, and the display section is provided with a password input means provided in a recessed position from the front surface. According to the above-mentioned structure, the system first displays two random one-digit numbers generated by the random number generator on the display section, and the card holder enters the PIN number. After manually inputting fake numbers for the number of digits displayed on the display, input your own PIN number. Thereafter, the cardholder manually inputs fake numbers corresponding to the number of digits displayed on the display unit, and completes the input operation. Therefore, the cardholder manually inputs the password one after another, making it easy to enter the password manually. In addition, when the cardholder is entering the PIN number, the display section is recessed from the front, so it cannot be seen by a third party, and if the cardholder is inputting the same PIN number. Also, since the number and number of digits entered for each transaction are different, it is difficult for a third party to decipher the PIN number from the card holder's input operation.

Embodiment Hereinafter, a personal identification system according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of a personal identification system in one embodiment of the present invention. In FIG. 1, numeral 1 is a card in which a personal identification number, value information, etc. are stored as magnetically recorded information. Reference numeral 2 denotes a card reading means, which reads the password stored in the card 1 when the card 1 is inserted. Reference numeral 3 denotes a password input means, which includes a keyboard section 3a consisting of a plurality of input keys with numbers engraved on the key tops, and a keyboard section 3a that allows the cardholder to input the number of digits of a fake number to input before entering the password manually. a display unit 3b consisting of a one-digit number display to display and a one-digit number display to display the number of digits of a fake number to be input after inputting the password; From a random number generator 3C that generates two random one-digit numbers, data input from the input keys of the keyboard section 3a, and two random one-digit numbers generated by the random number generator 3c. , and an input data decoding means 3d for decoding the manually entered password, and the cardholder inputs the password. Reference numeral 4 denotes read data storage means, which stores the password read by the card reading means 2. Reference numeral 5 denotes input data storage means, which stores the password entered manually from the password input means 3. Reference numeral 6 denotes a verification means, which verifies the password stored in the read data storage means 4 and the manually entered password stored in the manual data storage means 5 to determine that the input password is valid. This is to determine whether or not it is. Also,
FIG. 2 is a sectional view taken along line AA' in FIG. 1 of the password input means 3 of this embodiment. In FIG. 2, the display array 3b is provided at a position recessed from the front surface of the input key array 3a.

The operation of the personal identification system constructed as described above will be explained below using FIG. 3.

First, the card bearer inserts the card 1 into the card reading means 2.
When the card is inserted into the card (step 1), the card reading means 2 reads the PIN number stored on the card (step 1).
2) Read the read password and data storage means 4
(step 3). Next, PIN input means 3
The random number generator 3a generates two random one-digit numbers, an example of which is shown in FIG.
). These two random one-digit numbers are different for each transaction. Then, two of these random one-digit numbers are displayed on the display section 3b (step 5).
. Next, encourage card holders to use key skills. Then, before entering the PIN number, the cardholder manually enters fake numbers on the keyboard section 3a for the number of digits displayed on the display section 3b (step 6), and then Enter the password manually (step 7).

Next, the card bearer manually enters fake numbers for the number of digits displayed on the display section 3b (step 8).
，End the manual operation. Next, input data decoder jU3d
removes fake numbers equal to the number of digits generated by the random number generator 3c from before and after the key-entered data to decode the password (step 9). Then, the decrypted password is stored in the input data storage means 5 (St
eplo). Next, the verification means 6 compares the password stored in the read data storage means 4 with the human data stored in the human data storage means 5.
The input PIN number is compared with the entered PIN number stored by the system, and if they match, it is determined that the input PIN number is valid (step ll), and subsequent financial transactions are performed (s
tepl2). Then, return the card (step
3). If the security code does not match and it is determined that the manually entered PIN number is invalid (step 4), the financial transaction will not be performed and the card will be returned (step 3). Then, the device will wait for card insertion again. As described above, according to the present embodiment, the keyboard section 3a is made up of a plurality of input keys with numbers engraved on the key tops, and the sham number input by the cardholder before inputting the PIN number. a display section 3b consisting of a one-digit number display that displays the number of digits, and a one-digit number display that displays the number of digits of a fake number to be input after inputting the password; and the display section a random number generator 3C that generates two random one-digit numbers to be displayed on the keyboard section 3b;
The input data decoding means 3d decodes the input password using two random one-digit numbers generated by C. It is equipped with means 3. According to this policy, before entering the PIN, the cardholder enters a fake number for the number of digits displayed on the display section 3b, and then inputs his/her PIN using the key. After that, the cardholder again manually enters fake numbers as many as the number of digits displayed on the display section 3b to complete the input operation. It is easy to use key human power because it requires key human power. Also, when the cardholder is entering the PIN number,
The display unit 3b is recessed from the front, so it cannot be seen by third parties, and even when entering the same PIN number, the numbers entered for each transaction are different. Since the number of digits in each card is different, it is difficult for a third party to decipher the PIN from the cardholder's PIN input operation, and the key is simple and time-saving, making financial transactions more efficient. This system provides a personal identification system that enables personal identification. In this embodiment, the card 1 is used for magnetic recording; however, the present invention is not limited to this; for example, an IC card with a built-in semiconductor memory may be used for recording.

Effects of the Invention As described above, the present invention provides a keyboard section consisting of a plurality of input keys with numbers engraved on the key tops, and a fake number digit input by the cardholder before inputting the PIN number. A display section consisting of a one-digit number display that displays a number, and a one-digit number display that displays the number of digits of a fake number to be input after inputting a password, and a display on the display section. A random number generator that generates two random one-digit numbers, and data input from the input keys of the keyboard section and two random one-digit numbers generated by the random number generator, The input data decoding means for decoding the entered password is provided, and the display section is provided with a password input means provided in a recessed position from the front surface. With this structure, before inputting the PIN number, the cardholder manually enters the number of digits displayed on the display section, and then enters his own PIN number. After that, the card holder manually enters fake numbers as many as the number of digits displayed on the display to complete the input operation. The key to this is the ease of human labor.

In addition, when the cardholder is entering the PIN number, the display section is recessed from the front, so it cannot be seen by a third party, and if the cardholder is inputting the same PIN number. However, since the number and number of digits entered for each transaction are different, it is difficult for a third party to decipher the PIN from the cardholder's PIN input operation, and the number of digits is different for each transaction. This system provides a personal identification system that enables easy, time-saving, and efficient financial transactions.

[Brief explanation of drawings]

Fig. 1 is a block diagram of a personal identification system showing an embodiment of the present invention, Fig. 2 is a sectional view taken from A to A' shown in Fig. 1, and Fig. 3 shows the operation of an embodiment of the present invention. ...Card, 2.
...Card reading means, 3...Password input means,
4... Read data storage means, 5... Input data storage means, 6... Verification means.

Claims (1)

[Scope of Claims] A personal identification system for determining whether or not a person carrying a card is a legitimate card holder, comprising: a card storing a personal identification number specified by the legal card holder; a card reading means for reading a PIN number read by the card reader; a PIN input means for a card holder to enter a PIN number; a read data storage means for storing the PIN read by the card reading means; an input data storage means for storing a password input by the input data storage means; and a password stored in the read data storage means is compared with the input password stored in the input data storage means. verification means for determining whether or not the entered PIN is valid; the PIN input means includes a keyboard portion comprising a plurality of input keys with numbers engraved on the key tops; and a card holder. However, before entering the PIN, there is a 1-digit numeric display that displays the number of digits to enter, and after entering the PIN, there is a 1-digit numeric display that displays the number of digits to enter. a display section consisting of a numeric display; a random number generator that generates two random one-digit numbers to be displayed on the display section; and data input from the input keys of the keyboard section and the random digits. The input data decoding means is configured to decode an input password using two random one-phase numbers generated by a generator, and the display unit is provided in a recessed position from the front surface. Personal identification system.