PURPOSE: A smart shelf is provided to grasp the total stock easily in a large discount store or warehouse by using an RFID. CONSTITUTION: An RFID(Radio Frequency ID) tag stores information about each goods, and is attached to each goods. The goods are loaded on a shelf. An RFID reader is installed in the shelf, and transmits the RFID tag signal and data of the goods. The RFID reader transmits and receives the data with a server. The server grasps the quantity of each goods based on data received from the RFID reader.
