Back tooth the future! Brush that cleans teeth in 10 seconds

They are hailed as the gadgets that will revolutionise our lives – or those of our pets. But just how many of us will consider these hi-tech innovations as must-haves is open to question. They range from a toothbrush that can clean your teeth in ten seconds to a feeding bowl that can recognise your cat and send pictures of it eating. Other gadgets on show this week at the annual Consumer Electronics Show in Las Vegas include'walking' emergency vehicles that could be deployed in rough terrain in areas devastated by earthquake or flood. Then there is a hand-held wand that takes close-up pictures of the face and applies tiny amounts of make-up serum to cover any imperfections such as broken veins or age spots.