Hitachi has made RFID chips so small they're calling them "powder," as they measure 0.05mm x 0.05mm. That's a bunch of them up there on the right next to a human hair. At 5 microns thick, the RFID chips can more easily be embedded in sheets of paper, meaning they can be used in paper currency, gift certificates and identification. But since existing tags are already small enough to embed in paper, it leads one to wonder what new applications the developers have in mind. <pinktentacle>
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