Researchers at the Fraunhofer Institute in Germany have created a wood-based RFID tag designed for tracking timber, according to Discovery News.
The transponder is made of paper and a chemical compound most commonly derived from wood called lignin, and connects to an antenna that is read as trucks pass through gates equipped with RFID readers. The tags store a numeric code that corresponds with details about the origin, the quantity, type and the destination.
The institute noted that the amount of metal in the new transponder is much smaller than the total amount of the impurities around the wood.
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