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What Are Wet RFID Inlays?
Can they be embedded in concrete?
A wet inlay is an RFID transponder (a chip with an antenna on a substrate) with an adhesive backing. A dry inlay has no adhesive. Wet inlays are designed to be stuck inside corrugated boxes or on the backs of labels. It's possible that an inlay embedded in concrete might continue to function, but it is likely that the moisture in the concrete would detune the antenna, thereby shortening the read range. Eventually, I think the transponder components would be destroyed.
I recommend that you use a tag with a plastic housing to protect it from moisture and chemicals in the concrete. More than two dozen companies that offer such tags will be exhibiting at RFID Journal LIVE! 2016, which will be held in Orlando, Fla., on May 3-5.
—Mark Roberti, Founder and Editor, RFID Journal
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