Rfid: Benefits Of Rfid, Disadvantages
Of Rfid, Comparing Rfid With Bar Code Technology
Introduction to Radio Frequency Identification-RFID
Introduction to Radio Frequency
1. What is RFID
RFID, short for Rradio Frequency IDentification, is a
technology that enables identification of a tag (that is
normally attached with an entity) by using electromagnetic
waves. The function served by RFID is similar to bar code
identification, but line of sight signals are not required
for operation of RFID. Important components of an RFID system
- An RFID reader (also called transceiver) with an
antenna and a transceiver,
- A transponder (Also called a tag) that includes
an antenna and a chip)
2. Compare RFID with Bar Code Technology
Given below are the brief differences between the Barcode
technology and RFID:
|Frequencies used for tag reading
|Type of communication
||Line of sight communication
||Non-Line of sight communication
||Physical limitation exists. It is very difficult
to read a very long barcode.
||Can carry relatively large volume of data.
|Range of data readability
||Very limited range, less than a feet or
||Can be read up to several feet.
||Expensive, but likely to cost less as more
industries adopt the technology.