RFID technology uses radio waves to enable the non-contact identification of products or people through RFID tags. RFID tags can store data on a chip and transmit it via radio waves to a reader, allowing for bidirectional data transmission in real time. Readers can read tag data contactlessly from up to 15 meters away and check the validity at a high reading rate of 99%. RFID tags are used in applications like electronic festival wristbands, warehouse management, retail, and more.