Radio frequency Identification (RFID)

Radio Frequency Identification (RFID) refers to a wireless system comprised of two components: tags and readers.

  • The reader is a device that has one or more antennas that emit radio waves and receive signals back from the RFID tag.
  • Tags, which use radio waves to communicate their identity and other information to nearby readers, can be passive or active.
  • Passive RFID tags are powered by the reader and do not have a battery. Active RFID tags are powered by batteries.
  • RFID tags can store a range of information from one serial number to several pages of data.
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