What Does Radio Frequency Identification (RFID) Mean?
Radio Frequency Identification (RFID) refers to technologies that use wireless communication between an object (tag) and an interrogating device (reader) to automatically identify and track the physical location of each object. A tag’s transmission range is limited to several meters from the reader and a clear line of sight between the tag and reader is not necessarily required.
Techopedia Explains Radio Frequency Identification (RFID)
Most tags contain at least one integrated circuit (IC) and an antenna. The microchip stores information and is responsible for managing the radio frequency (RF) communication with the reader. Passive tags do not have an independent energy source and depend on an external electromagnetic signal, provided by the reader, to power their operations. Active tags contain an independent energy source, such as a battery. Thus, they may have increased processing, transmission capabilities and range.
