Tabs on tables, drinks straight to the bar printer, food to the kitchen, and a bill split at the end of the night.
Open a tab on a table or a name, add each round, and close it when they leave.
Each part of the menu prints where it is made, or shows on a screen there.
By person or equally, each share paid a different way, with a service charge when you want one.
Four digits each. Decide who may give a drink away, void a round or close the till.
Count the drawer at close and see what was expected beside what is there, with an X and a Z report.
Guests order the next round from their phone by scanning the table's code.