Rfid Operating Principles

Radio-frequency identification (RFID) is an auto-identification technology, similar in concept to other common auto-identification technologies such as bar code scanners, magnetic strip readers, or magnetic ink readers. Like other auto-ID techniques. RFID associates an identifying number with a physical object. In RFID the unique identifying number (UID or, as will be explained below, EPC) is incorporated in a special system, an RFID transponder (often simply known as a tag). An RFID Interrogator (usually known as a reader) is used to obtain the UID from the tag using electromagnetic waves. The tag is usually attached to a physical object that is to be identified, such as a carton, a pallet, or a container filled with a product.
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