Menus that change without a reprint
Put one code on the table tent and point it wherever you like — a PDF today, a page with tonight's specials tomorrow, and something else again at lunchtime.
The problem with a menu QR code
Almost every menu code in the wild encodes a link directly. When the file moves, the site is rebuilt, or the agency that hosted the PDF stops answering, every table tent in the room is a dead link — and the only fix is reprinting them.
A dynamic code encodes a short address that resolves through us. The printed square is permanent; the destination is a field.
Somewhere for it to go
If you have a menu page already, point at it. If you do not, host the PDF in the media library and repoint the code at a new version whenever the prices change — the printed code never knows the difference. Or build a landing page here, which is the option that reads properly on a phone without pinching.
What you learn
Scans by hour and weekday, which tells you when people actually reach for the code; by device, which tells you what to design for; and by code, if you use a different one per section of the room or per venue.
A code printed at 2 cm on a laminated card in low light is at the edge of what a phone camera manages. The printing notes cover size, contrast and error correction.