accessibility focus built into talkback
explore by touch built into talkback
typing on braille keyboard and touch screen simultaneously
typing PIN on lock screen

automatic scroll at the top/bottom of a page
switch amongst selected text/contraction tables
monitor multiple braille devices

messages enqueue while device isn't connected
removing a device needs its own selector
contracted braille doesn't count routing keys correctly

show that text is editable
a way to click on the background
a way to drag and drop
contracted braille and routing key associations
support the dynamic loading of non-built-in drivers
support serial braille devices
actions on elements with short text (grid view)
selecting multiple devices
switching between preferred text/contraction tables