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Explain the principle behind RFID technology.

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RFID (Radio Frequency Identification) technology works on the principle of using electromagnetic fields to automatically identify and track tags attached to objects. These tags contain electronically stored information that can be read by an RFID reader using radio waves. When the reader sends a signal to the tag, the tag responds with its stored information, allowing for quick and accurate data collection without the need for direct line of sight.

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