Cutting printed menu costs with a QR menu

A printed menu looks good; reprinting it every time a price moves costs money and operational effort. A QR menu opens the current list on the phone of whoever scans the code on the table.
No app to install
The customer scans the code with the phone camera and the menu opens in the browser. Nothing extra is required on iOS or Android. That detail decides adoption: the fewer the steps, the more people actually see the menu.
The price has one source
The menu prices are fed from the same product records as the POS. The moment you change a price the QR menu has changed with it, and there is no print run. The customer never sees an old price, and there is no surprise at the till.
Hiding a sold-out item is one tap
When something runs out mid-service you take it off the menu with one tap. The waiter does not have to say "we are out of that"; the customer never sees it listed. Different menus and prices per branch can be defined too.
The QR menu is read-only, and a table’s code lives at an address nobody can guess. It grants no authority to place an order — the separation between reading and doing is kept.