I realize that a phone can't do everything, but in this age, most of these things it can't are simply because they haven't been chased yet. 1) Car Keys. Don't want to carry them anymore. I want to be able unlock my car and fire it up w/ my phone. Preferably this happens automatically when I walk up to it, but I'll settle for a manual button on the phone in the beginning. 2) House Key. Same here. I don't enter through my door, I enter via my garage, so I want my garage to open when I get within 75 ft of it. automagically. but a button is ok at first. 3) Payment. No wallet please. Just let me swipe the thing over your scanner, or interface w/ my paypale account or something. 4) Cards. No thanks. Build them all into the phone so that I can swipe it. Anything else I'm forgetting? I don't mean anything crazy, just things that some infrastructure or programming could make happen.