Hitachi, the company which earlier held the record for the smallest RFID tags dubbed mu-chip has broken their own record with even small tags called RFID ‘Powder’.
The earlier mu-chip measured 0.4 x 0.4 millimeters and the new record breaking tags measure just 0.05 x 0.05 mm.
These new tags can have a 128-bit ROM for storing a unique 38 digit number. According to the company they have used semiconductor miniaturization technology and electron beams to write data on the chip substrates to achieve the small size.
Such devices can be used to track and identify people. For example if you participated in some sort of a protest and the cops sprinkled some tags on the mob then they can easily track down all the participants easily.
Via: technovelgy
