Radio-frequency identification (RFID) uses electromagnetic fields to automatically identify and track tags attached to objects. The tags contain electronically stored information. Passive tags collect energy from a nearby RFID reader's interrogating radio waves. Active tags have a local power source (such as a battery) and may operate hundreds of meters from the RFID reader. Unlike a barcode, the tag need not be within the line of sight of the reader, so it may be embedded in the tracked object. RFID is one method for Automatic Identification and Data Capture (AIDC).
2. RFID(Radio Frequency Identification) technology
works on radio waves that is used to identify and
track objects.
Small electronic device capable of storing 2
kilobytes(or less) data that provides unique identity
to an object.
3. RFID was invented by Harry Stockman in 1948.
Commercial use started in 1990.
It was firstly used during WW2 by United Kingdom
to identify enemy planes.
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7. RFID reader is a two way radio transmitter-receiver
used to gather information from a RFID tag.
RFID reader sends a signal to a tag and also
receives/reads its response.
8. Unlike barcode reader should not be in LOS for
sending and receiving signals.
RFID tags can store more information.
Effective way to track animals as well as other
objects.
Unlike barcode these tags can read as well as write.
9. Active RFID tags are costly due to batteries.
Privacy is a concern because they can easily be
tapped.
RFID devices take large amount of time during
programming
Lack of awareness in people.
