Patent ID: 7698563

Claim:
An unmanned terminal comprising: a display unit which provides information on the sequence and procedure of usage for financial transaction and according to user's input, displays a next screen; a card or bankbook recognition unit which recognizes a card or a bankbook when the card or bankbook is inserted according to the procedure displayed on the display unit; a user detail retrieval unit which reads out the account number of the card or bankbook inserted into the card or bankbook recognition unit and retrieves financial information of the user from the main server of a financial institution; an input unit with which transaction details and a password are input according to a procedure information screen displayed on the display unit; a memory which stores a program for displaying usage procedure information sequentially on the display unit; a CPU which executes the program stored in the memory; and a comparison unit which compares a password input through the input unit with the password of the user retrieved from the main server, wherein cases of numbers and letters to randomly arrange a pair of a number from 0 to 9 and a letter from A to J corresponding to each number, cases of letters to randomly arrange 10 letters from A to J, and a program to display on the display unit an indirect password recognition keypad and an indirect password keypad by using the cases of numbers and letters are stored in the memory; and the CPU drives the program stored in the memory and provides an indirect password recognition keypad, in which each pair of a number and a letter is randomly arranged, on the display unit, and if user's recognition of an indirect password through the indirect password recognition keypad is completed, the CPU displays an indirect password keypad, in which only the letters are randomly arranged, and if an indirect password formed by letters is input through the indirect password keypad, obtains a password formed by numbers by comparing the input indirect password with the already provided indirect password recognition keypad.