RFID is a technology that uses radio waves to identify objects. It is used in a variety of applications, including security, inventory management, and tracking.
Relevant categories for this topic include automatic identification and data capture.
Technologies that are relevant in this context include passive RFID, active RFID, semi-passive RFID, battery-assisted passive RFID, ultra-wideband RFID, near-field communication and far-field communication.