How to Tag Problem Products

By Mark Roberti

Many products are difficult to track with RFID, but good system design and precise tag placement can overcome most hurdles. Here's what you need to know to tag successfully.

Companies that manufacture products that are made of—or packaged in—materials that are not "RF friendly" are concerned about how they are going to meet mandates from retailers. It’s difficult to tag many liquid products, because water absorbs electromagnetic radiation at UHF frequencies (868 to 956 MHz). And UHF waves bounce off of metal, making it difficult to read tags on canned goods, items in foil wrapping and other products made of metal o...

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