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Updated on January 26, 2011

About The RFID Tag

RFID or Radio Frequency Identification is a technology that utilizes communication through radio-waves to transfer data between a reader and an electronic tag (known as a RFID Tag). The RFID tag can be affixed to any item, for the function of detection and tracking. The RFID tag can be affixed to parcels or products coming into a warehouse or going out of warehouse but can have other uses other than production. A RFID tag can be read a few feet away and does not be in the line of sight of the RFID reader like in a barcode system. This method allows a large volume reading and it is all due to the RFID tag.

Radio Frequency Identification involves two pieces of equipment:

  • An RFID Reader, sometimes called an RFID Interrogator

  • RFID Tag, sometimes called an RFID Label

An RFID tag includes two parts. The first part is an integrated circuit which stores and processes information, modulating and demodulating the radio frequency signal. The next part is an antenna for receiving and transmitting the radio frequency signal signal.



RFID Tag Types

An RFID tag can come in 3 different flavors (no you can’t eat them!).

  • Passive RFID Tag: This type of RFID tag has no power source but powers itself via an outside electromagnetic field to start signal transmission.

  • Active RFID Tag: This type of RFID tag has a built in battery and transmits signals as soon as an outside source is identified.

  • Battery Assisted Passive Tag: This type of RFID tag needs an external source to awake but allows for increased range over the other types of RFID tags.


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