Rfid (Radio Frequency Identification) Definition

Radio frequency identification (RFID) is a technology that uses electromagnetic fields to automatically identify and track tags attached to objects. The tags contain electronically stored information. Passive tags collect energy from a nearby RFID reader’s interrogating radio waves. Active tags have a local power source, such as a battery, and may operate hundreds of feet from the RFID reader. Unlike barcodes, which can only be read one at a time, RFID tags can be read simultaneously by multiple readers.

RFID is used in many applications, including access control, livestock tracking, vehicle identification, and supply chain management.