*At last: cheap throwaway possibly toxic tracking labels that are both "arphids" and "buckyjunk" at the same time.
http://www.technologyreview.com/computing/24852/?nlid=2850&a=f
(...)
Gyoujin Cho, a professor of printed electronics engineering at Sunchon National University, who led the work, estimates that the tags cost three cents apiece. To replace barcodes, RFID tags will need to cost a penny or less. But Cho says this should be achievable if all the layers on a tag can be deposited with a roll-to-roll process. A version of the current prototype that is capable of holding useful amounts of data should be on the market later this year, he says.
"The new RFID tags will be the first product to use printed transistors made from carbon nanotubes. Researchers have been developing nanotube inks for a decade, but the only nanotube electronic product on the market so far is a film for display electrodes. Rick Jansen at carbon nanotube ink maker SouthWest NanoTechnologies says that good quality nanotube inks that are uniform and viscous enough to print have been costly to produce...."
