When you turn on Braille Screen Input in VoiceOver, you can use your fingers to type braille directly on the iPad screen, without a physical braille keyboard. You can also use Braille Screen Input to enter braille commands for navigating and controlling your iPad.
With VoiceOver turned on, do one of the following to start Braille Screen Input:
Use a gesture: Place one finger from each hand at the top and bottom edges of the screen and double-tap. If the gesture doesn’t work, go to Settings Common braille commands for VoiceOver on your iPhone, iPad, and iPod touch.
Go to Settings Accessibility features for vision on iPad