

So, most pump POS used to have a labeled or unlabeled mute button. That has become rare.
So far, I’ve been able to kick all of them into a diagnostic/trouble menu by pressing pairs of keys on each side of the monitor in sequence from the top.
Some of them have a timeout on this screen, but the counter resets when you hit a key.
Passwords can be entered from the keypad, with ok/enter also working. I bet the passwords are the manufacturer default, probably a 5-7 digit number. I was able to find partial training manuals and setup docs from one of the POS vendors but I didn’t find a default password or deeper technical docs for the one brand I looked into.
Fucking ads in my face fucking piss me off.
Very true, and more efficient.
For now, I can mute all that I’ve found, it also looks like the pump has crashed, which is fun.
It quits working, I may adopt your method.