Word has it Hitachi’s latest batch of RFID chips are so small, “you won’t even know they’re there.”
That’s the gossip from the Wired magazine blog posted earlier.
The electronics conglomerate recently showed a prototype of an RFID chip measuring a .05 millimeters square and 5 microns thick, about the size of a grain of sand. They expect to have ‘em on the market in two or three years.








