In Safari, you can't enter text using braille screen input on webpages. Braille works in the address/search field, but go to a webpage with a text field and start editing it (say a login or search field). Switch to braille input and try to type something: either you get nothing, or you get responses as though Quick Nav were on, even though this is not a hardware keyboard. While this is a great feature for jumping around a webpage, it should be disabled when you are editing. Alternatively, and less ideally, offer a gesture to enable or disable Quick Nav using the Braille Screen Input keyboard.