Interesting article from Gizmodo on Printable Nanotube RFIDs. Developed by a collaboration between the Suncheon National University and Rice University, the new tag can be printed directly on paper or plastic, with a cent around 3 cents per tag.

At that price, and (needless to say) once this  capability becomes available in office printers, that will make paper document tracking a reality - a key enabler for the Document 3.0 world. Just like we are thinking twice today before printing in color because it adds value to our documents (for a few pennies), we will also ask ourselves whether we want our documents to be fully traceable (for the same order of magnitude).