I don’t get it. Either say “I’m ready to pay now” when the bill is dropped off, or just flag the server down later when you are ready. What problem are we solving here?
A restaurant that's tech savvy enough to be able to pay-at-the-table-with-your-smartphone-via-applepay but somehow the bill they drop off at the table doesn't let you do so, requiring the server to scan your phone at the table.
Seems like a lot of fuss to avoid initiating contact with a human.