M5StackSats
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Room77: Keep COMPLETE report until Button press
One most requested feature from testing at Room77 was that the "COMPLETE" screen on a finished payment should stay on the screen until the bar tender presses a Button (or Device gets put back into cradle).
Also it should make a sound on complete - so that bartender gets a acustical notice even when was distracted with something else to return to finish process.
… and maybe report some invoice details like the ID on that screen.
Could you define invoice details? Invoice ID make sense, which other information are useful?