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What Are RFID Tags?

What Are RFID Tags?

RFID tags will now be used to track Amarnath pilgrims.

  • The decision was taken amid heightened security threats to the pilgrimage.
  • Radio Frequency Identification is a wireless tracking system that consists of tags and readers.
  • Radio waves are used to communicate information/identity of objects or people.
  • The tags can carry encrypted information, serial numbers and short descriptions.
  • Types – passive and active RFID tags:
    • Active RFIDs use their own power source, mostly batteries.
    • Passive RFIDs are activated through the reader using the electromagnetic energy it transmits.
  • RFID tags use an integrated circuit and an antenna to communicate with a reader using radio waves at several different frequencies – low frequency (LF), high frequency (HF), and ultra-high frequency (UHF).
  • The message sent back by the tag in form or radio waves is translated into data and analysed by the host computer system.
  • Unlike Barcodes, RFIDs do not require direct line of sight to identify objects.

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