RFID chips shrink to powder size
Tiny computer chips used for tracking food, tickets and other items are getting even smaller. Hitachi showed off radio frequency identification, or RFID, chips that are just 0.002 inches by 0.002 inches and look like bits of powder. They're thin enough to be embedded in a piece of paper, company spokesman Masayuki Takeuchi said Thursday.
RFID tags store data, but they need to be brought near special reading devices that beam energy to the chips, which then send information back to the readers.
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