Get flash to fully experience Pearltrees RFID chip next to a
grain of rice. This chip contains a radio-frequency
electromagnetic field coil that modulates an external magnetic
field to transfer a coded identification number when queried by
a reader device. This small type is incorporated in consumer
products, and implanted in pets, for identification purposes.
Radio-frequency identification ( RFID ) is the wireless non-
contact use of radio-frequency electromagnetic fields to
transfer data, for the purposes of automatically identifying and
tracking tags attached to objects. Some tags require no battery
and are powered and read at short ranges via magnetic fields (
electromagnetic induction ). Near-field electromagnetic ranging
(NFER) refers to any radio technology employing the near-field
properties of radio waves as a Real Time Location System (RTLS).
[ edit ] Overview Near-field electromagnetic ranging is an
emerging RTLS technology that employs transmitter tags and one
or more receiving units. Operating wit