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Advances in RFID help food traceability
IT is sometimes said that RFID at more than one metre’s range is impossible under the radio regulations of most countries other than at UHF, a band of license free frequencies around 900MHz. It is true that longer range is available if a battery is present in the RFID tag, and this is a viable solution for vehicles and trailers. However, these so-called “active” tags have limited life, are expensive, relatively large and have more parts to potentially fail.
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