There was an amazing article on News@Nature today about device implanted into the brain of a paraplegic which allows him to control his computer and television! Surely it won't be long now before this sort of thing becomes available to the general public. The possibilities boggle the mind - imagine answering and dialing your (implanted in your skull, naturally) mobile phone or unlocking your car and starting your engine. How about sending passwords and PIN numbers to computers, ATM machines or your home security system.