Control your iPhone by rotating your head, all hail iOS 7.1
Don’t you dare think that iPhone cannot be customised. Apple has taken an initiative through which you can adjust the font size, add you customised blur effect and now you can control it with your head too. Apple has added this new feature in iOS 7.1 under “Switch Control” option located at “Accessibility” settings. This will let you create your personal switches, a bit of like Activator, through which you can add your own type of functionality to each switch. Just select “Camera” as a source and then choose your head movement, right or left. Lastly, assign a functionality to that particular switch and you are done.
If you are not in front of your camera than your iPhone will show a warning like “cannot locate your face”. An amazing thing to test up in your iOS device. The full explanation, along with screenshots, is detailed HERE