A year or so ago, HP came out with an RFID chip the size of a grain of rice.1 That provided a significant step towards ubiquitous localizers. Today, we have the next big step: wireless power.2 Now both of these just need to be miniaturized to nano-technology scales.
Mr. Luke Schierer. "Localizers!" Random Unfinished Thoughts. 2006-07-18. http://www.schierer.org/~luke/log/20060718-1331/659 ↩
Mr. Franklin Hadley. "Goodbye wiresâ¦" MIT news. 2007-06-07. http://web.mit.edu/newsoffice/2007/wireless-0607.html ↩