(AP) -- Tiny computer chips used for tracking food, tickets and other items are getting even smaller. Hitachi Ltd., a Japanese electronics maker, recently 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.
Content from The Associated Press expires 15 days after original publication date. For more information about The Associated Press, please visit www.ap.org .
Explore further: Amazon expands Kindle tablet sale to 170 countries (Update)