Basics

• Radio Frequency Identification

Active Tags

• Have their own power suply

• Are bulky

Passive Tags

• Relies on the radio frequeny from the RFID reader to generate power using electromagnetic coupling to transmit the feedback signal.

• Range is less

• More prominent

Semi Passive Tags

• Have their own power suply.

• For sending the feedback signal, they rely on radio frequency from the RFID tags.