Radio-frequency identification (RFID) is a wireless way of using of radio-frequency electromagnetic fields to send and receive data. Usually, RIFD technology is used for the purposes of automatically identifying and tracking "tags", which are attached to designated objects. Unlike the common bar-code, RIFD technology does not require contact with the reader of the information. This means that the tag may be a few feet away or as many as 100 meters away from the device that is receiving information from the tag.
Uses for RIFD tagging can vary and continue to grow as the technology becomes more accessible. Once used strictly for corporate and high profile tracking, RIFD technology can now be found in companies who want to keep track of their merchandise patterns, tracking of vehicles, pets, and even people, as well as use in the financial world during the exchange of merchandise from vendor to customer.
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