Big Brother is watching granny... and her fridge

Those of you ancient enough to remember Tomorrow's World, the BBC's original science and technology TV spot, will be familiar with homes of the future. In the seventies the programme's presenters promised us that we'd all be living in fully-automated homes, run by robot butlers by the year 2000, eating space food prepared by a computer, and flying to work at our paper-free offices using our own personal jetpacks. They lied. Now boffins from the University of...