QR codes have their uses, but I can’t stand when they are placed on billboards as a link to more info.
A simple URL I can read and remember for later, good luck memorising a QR code.
I’ve seen too many obvious examples of a marketing team getting carried away and abusing these things. The most absurd one was on a police notice on the London Underground advising people to take care to hide their valuables from thieves. How could you find out more? By taking your 800 dollar valuable out to scan the QR code...