USER AUTHORIZATION SYSTEM AND METHOD WITH A PASSWORD VARIABLE ON EACH TRIAL

摘要

PURPOSE: A user authorization system and method with a changeable password on each trial are provided to prevent exposure of a password or decoding hacking by generating a changeable password without a separate OTP(One Time Password) generator. CONSTITUTION: A control module commands number matrix writing to a number matrix writing module. Number matrices on which a control module is written is displayed on a display unit(S91). The control module receives the number matrices displayed on the display unit from the number matrix writing module. The control module stores a password in a temporary storage within memory or a control unit by calculating a unique password for the number matrices(S92). The password calculated from the number matrix displayed on the display unit is inputted from a user(S93). The saved password is compared with the password inputted from the user(S94). The control unit releases a door by controlling a door driving unit(S95).