Apple MD522LL/A 用户手册
Appendix A
Accessibility
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Turn Guided Access on or off
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Tap Passcode Settings to set a passcode that controls the use of Guided Access (preventing
someone from leaving a session), and turn on Touch ID (as a way to end Guided Access)
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Tap Time Limits to set a sound or have the remaining Guided Access time spoken before time
ends
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Set whether other accessibility shortcuts are available during a session
Start a Guided Access session. After turning on Guided Access, open the app, then triple-click
the Home button. Adjust settings for the session, then tap Start.
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Disable app controls and areas of the app screen: Draw a circle or rectangle around any part
of the screen you want to disable. Drag the mask into position or use the handles to adjust
its size.
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Enable the Sleep/Wake button and Volume buttons: Tap Options below Hardware Buttons.
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Keep iPad from switching from portrait to landscape or from responding to other motions: Tap
Options, then turn off Motion.
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Prevent typing: Tap Options, then turn off Keyboards.
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Ignore all screen touches: Turn off Touch at the bottom of the screen.
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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 lets you control iPad using a single switch or multiple switches. Use any of several
methods to perform actions such as selecting, tapping, 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:
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Item scanning (default), which highlights different items on the screen until you select one.
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Point scanning, which lets you use scanning crosshairs to pick a screen location.
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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 selected item (tap, drag, or pinch, for example).
If you use multiple switches, you can set up each switch to perform a specific action and
customize your item selection method. For example, instead of automatically scanning screen
items, you can set up switches to move to the next or previous item on demand.
You can adjust the behavior of Switch Control in a variety of ways, to suit your specific needs
and style.
Add a switch and turn on Switch Control
You can use any of these as a switch:
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An external adaptive switch: Choose from a variety of popular USB or Bluetooth switches.
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The iPad screen: Tap the screen to trigger the switch.