[DoctorOhh]

Originally Posted by alfpier

for the navigation part I would suggest this app, that has a theme also for e-ink
https://play.google.com/store/apps/d....swkey.nonroot

it is hideable and has volume shortcuts.
there is also a root version

Thanks for the recommendation. It definitely looks like it has its place. As my setup exists now, I currently have virtual buttons for everything except screenshot and after experimenting with various apps, I prefer to use a double tap on the main home button for the rare screenshot.