THE DOOR OPENING AND SHUTTING METHOD WHICH USES THE CELL PHONE WHERE THE FLUCTUATION PASSWORD BAR CODE IS STORED

摘要

A method of opening and closing a door using a cellular phone with a variable password bar code is provided to enhance user convenience by enabling a user to open the door by contacting the cellular phone with a bar code reader. A method of opening and closing a door using a cellular phone comprises as the following steps. A user inputs a password using key input buttons of a door lock(S10). The password is manipulated in a calculator of the door lock and converted into a variable password bar code in a bar code converter. The variable password bar code is stored in a memory of the door lock and displayed on a screen(S20). The variable password bar code is stored in a cellular phone of a user. Whether the variable password bar code stored in the memory is matched with the variable password bar code stored in the cellular phone is determined(S40). A door is selectively opened according to the matching result between the variable password bar codes stored in the memory and the cellular phone(S50).