SYSTEM AND A METHOD FOR OPENING/CLOSING A DOOR BY USING A MOBILE TERMINAL, SPECIFICALLY IN CONNECTION WITH TRANSMITTING CODE INFORMATION TO A DOOR OPEN/CLOSE DEVICE IF THE CODE INFORMATION AND A PASSWORD ARE CORRECT, TO UNLOCK THE DOOR OPEN/CLOSE DEVICE

摘要

PURPOSE: A system and a method for opening/closing a door by using a mobile terminal are provided to unlock a door open/close device only when code information and a password transmitted from a mobile terminal are correct, and to confirm whether a legal user enters, thereby maintaining a safer security function. CONSTITUTION: A mobile terminal(10) transmits code information and a password to unlock a door open/close device(40). The door open/close device(40) is installed at a doorway while storing the same code information as the code information of the mobile terminal(10), and is unlocked when the code information is transmitted. A service provider server(30) is connected to the door open/close device(40), sends the code information to the mobile terminal(10) and the door open/close device(40), and sends the code information to the door open/close device(40) if the transmitted code information and the password are correct, so as to unlock the door open/close device(40).