When done right, they can be awesome. I was at a local restaurant that had a good system. The QR code was connected to the actual table, as in they knew what ph

When done right, they can be awesome. I was at a local restaurant that had a good system. The QR code was connected to the actual table, as in they knew what physical table I was at. Therefore if I wanted another drink, I just opened my phone, hit the button and it was brought out 1 minute later. I didn't have to wait for a staff member, flag them down, ask for what I want, then wait for my drink. I could also request a staff member to the table (if I preferred to talk in person). It kept a running tab of my bill and at any time I could just pay online and walk away. The feeling was like the first time just getting out of an uber and walking away. Again, I didn't have to flag down a staff member, ask for the bill, get the bill, ask for "the machine", wait for them to return, tap my credit card etc etc. It was all very well done. Unfortunately, most QR code menus are just a link to their mobile site. It has 0 added functionality.