Smart Elevator System

Described is a smart elevator system. The smart elevator system comprises: an elevator installed in a multi-story building; a portable terminal including a communication unit for remote and short-range communication by which a visitor reserves an elevator use; a server system communicating with the portable terminal to receive a reservation for use of the elevator from the portable terminal and to control the elevator through a control unit according to contents of reservation; and a portable terminal detector installed adjacent to a door of the elevator to detect a unique key of the portable terminal through the communication unit when the portable terminal has been reserved for use reservation approaches.