http://news.bbc.co.uk/2/hi/technology/4059011.stm... "If you are wearing smart make-up, where electronics are controlling the appearance, you don't want people hacking in and writing messages on your forehead" - (BT futurologist Ian Pearson)...
...Yet this technology is already upon us. ...These "smart fabrics" have come about through advances in nano- and micro-engineering - the ability to manipulate and exploit materials at micro or molecular scale.
At the nanoscale, materials can be "tuned" to display unusual properties that can be exploited to build faster, lighter, stronger and more efficient devices and systems. [continued]