has practical applications: in the future doctors could see through their hands or other obstacles when they are doing operations. G. An amazing new sofa has been invented by a group of scientists in Northern Ireland. As soon as you sit down on it, it will know it's you. The sofa is connected to a computer and weighs you when you sit on it, then it checks its memory and decides who you are. Then it'll be able to set lots of electrical appliances just how you like them, like the lights or maybe the TV without you having to move a finger.