@spiegelmama @cmconseils honestly I think they are nice for the situ where the waitstaff has taken all your menus already and you want to check it again without having to wait for them to come around and ask for a menu again, or you are outside the restaurant/waiting to be seated and want to check the menu without having to figure out the website URL is and where the menu page is. That's why I said "as an option", I think a physical menu has to exist as a base, even if you have to ask for it.
The QR code *only* ordering/menus people are mentioning elsewhere in the thread sound horrible.