How RFID Tags Work
Radio-frequency identification RFID is the wireless use of electromagnetic fields to transfer data, for the purposes of automatically identifying and tracking tags attached to objects. The tags contain electronically stored information.
RFID tags are tracking consumer products worldwide. Many manufacturers use the tags to track the location of each product they make from the time it’s made until it’s pulled off the shelf and tossed in a shopping cart. Outside the realm of retail merchandise, RFID tags are tracking vehicles, airline passengers, Alzheimer’s patients and pets.