'Where's my hoverboard?!' is the perennial cry of tech futuregazers the world over. And so it will remain, as another year ends without the invention of a Back to the Future-esque flying skateboard. Technology is, somehow, never as good as we want it to be. But there are legions of clever, dedicated and enormously ambitious people working non-stop to improve our lives with gadgets. Here are ten of this year's greatest innovations, from giants like Google to home-spun startups. One day, all this will be yours.