for iOS 9.1 software

Set a session time limit: Tap Time Limit Options at the bottom of
the screen.
End the session. Triple-click the Home button, then enter the
Guided Access passcode, or use Touch ID (if enabled).
Switch Control
Switch Control
Switch Control lets you control iPhone using a single switch or multiple
switches. Use any of several methods to perform actions such as
selecting, tapping, pressing, dragging, typing, and even free-hand
drawing. The basic technique is to use a switch to select an item or
location on the screen, and then use the same (or different) switch to
choose an action to perform on that item or location. Three basic
methods are:
Item scanning (default), which highlights different items on the
screen until you select one.
Point scanning, which lets you use scanning crosshairs to pick a
screen location.
Manual selection, which lets you move from item to item on
demand (requires multiple switches).
Whichever method you use, when you select an individual item (rather
than a group), a menu appears so you can choose how to act on the