Automatic scanning
LibreAAC includes automatic focus scanning for people who select controls through a switch, keyboard, or another device that generates standard key events.
To enable it:
- Open Settings.
- Find the Scanning group.
- Enable Automatic scanning.
- Adjust the Scan interval to a comfortable speed.
When active, a strong focus highlight moves through available communication controls. A status bar confirms that scanning is active and provides a Pause scanning button.
Keyboard controls
While scanning is active:
Move to the next available control.
Move to the previous available control.
Activate the focused control.
Pause scanning.
Timing
The scan interval ranges from 700 ms to 5000 ms. Start slowly enough for reliable selection. Speed can be increased after the person is familiar with the board and scanning order.
Visual presentation
Other settings that may support access include:
- fitting the complete board or using larger scrolling buttons;
- moving the phrase row to the top or bottom;
- placing labels above or below images;
- hiding visual labels while retaining accessible names;
- using the light, dark or system theme; and
- choosing words, images, or both in the built phrase.
Touch and keyboard use
Scanning does not remove ordinary touch access. A support person can pause it from the status bar or disable it in Settings.
LibreAAC exposes standard focus and accessible names, but complete compatibility depends on the tablet, Android accessibility service, switch interface and board content. Test the intended setup with the person who will use it.
Assessment and support
Alternative access is individual. A speech pathologist, occupational therapist, assistive technology specialist or other qualified professional can help assess switch placement, timing, symbol presentation and vocabulary organisation.