Radio Frequency Identification. RFID is a method of automatic identification, and also a technology of storing information about an object and data updating on a device called RFID tag or transponder by means of radio frequency electromagnetic emission.
RFID tag can store any digital information about an object (its weight, price, location, characteristics, etc). RFID tag can be attached to any object, animal or person for transmitting or receiving information by means of radio waves. Its main advantages – contact-free and all-weather operation. RFID-system consists of three components: 1. Reader 2. Antenna 3. Tag with built-in antenna, receiver and transmitter.