According to 9to5Mac
, iOS 7 has a feature that lets you control your iPhone or iPad with head movements to the left or right.
Built into the Accessibility section is a feature that lets you navigate the phone by moving your head to the left or the right. But using this feature requires you to go through all of your options on screen before you move your head to confirm your selection, making it a very slow process. Just tap Settings > General > Accessibility > Switches > Switch Source.
Apple presently offers a wide range of accessibility features that help users especially users with disabilities. A few of the options include VoiceOver, dynamic screen magnification, playback of closed-captioned video, mono audio, reverse video and more.
You can also use left and right head movements to act as a home button, start Siri, open Notification Center, open the App Switcher, increase or lower the volume, or just tap on an app or other option.
iOS 7 promises to bring even more accessibility options, further increasing the utility of Apple's devices.