Here (Austin) it’s used in movie theaters that had seat food ordering and I gotta say thee
execution is flawless now that the camera has a built in QR.
I think if QR could start over again and have support from the camera without the user needing to figure an app to use/get etc. things might have been different.
I went to a restaurant the other day and it had one of those Coke Freestyle soda machines. There was a QR code on the screen which I scanned with my phone. This opened a website with drink choices. I put my cup under the dispenser and pushed the Barq's Root Beer button on the website on my phone which dispensed the drink from the machine.
I agreed with this take until 2020 and subsequent shutdowns of varying levels occurred in my U.S. state (Oregon) due to Covid-19. There are several eateries in my city utilizing them to great effect for menus and ordering as they have pivoted to outdoor and no-touch dining. And now that I have finally embraced them on this level, I notice and use them more: flyers around town, links to video tutorials on products I have purchased, local printed media, etc.
How so? They are effectively a `<link/>` IRL. I would say the UX is pretty good. I don't know how much easier it can get than pulling out your camera then taking a picture using the camera app.
Their use has exploded since Covid in dense cities: I regularly have to use them to fill out pre-screening forms for facilities ("do you have symptoms X or have been in contact..."), see restaurant menus, pay bills (receipt at a restaurant has a QR code printed on the bottom, link to an online checkout on your phone, so you don't have to handle the POS machine), etc.