I am mainly reading on iPad due to screen ratio, I’m self hosting yacreader library and use yacreader app (server is free, app is one time payment on iPad, does have an android/windows client but not developed as iOS version). If I remember correctly, I think there is also Panel on ipad that do the same (would need to check). On android, I need to check and can answer tomorrow (almost 1am here), could be cdisplayex but unsure.

i don’t know any on computer but some app offer that on android/ios. i guess they look for some kind of contrast pattern to determine each frame.

Did try and it does work really well on some but not all garphics novel / comics

Does it have access to boot menu? If so, change boot order so it goes to usb first. You will then only need to create a bootable usb stick with Linux on it

I’m using home assistant, with mqtt which acts for many things and I get notification in different way depending the needs. Could be home assistant app or telegram or lighting up some light or sending voice messages to a speaker. All notifications are triggered by automations looking at states. Haven’t done it but automation could be re launched automatically until (for exemple) I press a button or responding to telegram message