Radio Frequency Identification

Added on - 10 Aug 2021

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KDR DR HANI KALSOM BINTI HASHIM
oAutomatic identification in general and radio frequency identification (RFID) in particular find
extensive use within logistics in all economic sectors.
oRFID has the ability to accurately read vast quantities of data, from any tags within range, very
quickly, without line of sight and whilst the items are moving.
oThese advantages over barcoding open up the ability to employ track-and-trace techniques
where previously they were impossible or at least impractical.
oRFID is one of a series of technologies available for automating the collection of data.
oAutomating data capture is a goal that has been sought in most sectors of industry and servicesfor many years.
oRadio frequency identification (RFID) applies to three technologies:
oActive RFID
oPassive RFID
oNear field communication (NFC).
oWhilst they share the fact that they all use radio signals as a means of communication theydiffer fundamentally in their use of that technology.
oRFID readers will read continuously and will read any tags within range.
oThe main advantages of RFID tags are that they can be read ‘many at a time’ without line ofsight and can be modified during use, which overcomes the disadvantages of barcodes.
oActive RFID requires a power source with which to transmit its signal.
oThe device contains as a minimum an individual identity, and a transmitter.
oEven within this classification there are two significantly different technologies, those that work
in or near a building, and those that can be tracked remotely.
oWhilst these technologies can have varying uses, a component of almost all systems is real-time
location (RTLS).
Principles of active RFID
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