RFID "powder"

Hitachi has reportedly developed a Radio Frequency Identification (RFID) chip that's just .05 x .05 mm, 64 times smaller than their current line of .4 x .4 mm mu-chips. The new RFID chips are 5 microns thick and have a 128-bit memory capable of storing a 38-digit ID number. According to a Pink Tentacle post linking to a FujiSankei Business i. article in Japanese, the RFID "powder" is expected to be available in the next two to three years.
Link (Thanks, Sean Ness!)