TouchID

So does anybody else, like me, see TouchID coming to all of Apple's other products? I mean, we all know it will come to the Ipad and the Mini, but what about the Imac and the laptops? I can totally see Apple using this tech. All they have to do is bake it in as their new power/login button. I'm hoping it will happen this year, but it may well be next year. What do you think?