| 摘要 |
PURPOSE: A system and a device for opening and closing a door are provided to improve security by preventing a password from being exposed. CONSTITUTION: A system for opening and closing a door has a reception space and opens and closes a reception unit(100) in which the door is installed. The reception unit receives the specific object by opening and closing the door and includes a key input unit, a communication connection unit, and a controller. The first data for authenticating the opening and closing of the door is inputted to the key input unit. The controller opens and closes the door according to the inputted data information. A communication terminal(200) communicates with the reception unit through the communication connection unit of the reception unit. A receiver terminal(300) receives the first data inputted to the reception unit through the communication terminal and provides the first data to a user and receives the second data from the user and transmits the controller of the reception unit.
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