Virtual keyboard unveiled at world computer show A full-size virtual keyboard projected by light on to any surface has been invented. <img src=http://www.ananova.com/images/news/irkeyboardAP362x500.jpg> <A HREF="http://www.ananova.com/news/story/sm_548253.html?menu=news.technology" target="_new">http://www.ananova.com/news/story/sm_548253.html?menu=news.technology</A>