In my experience, QR codes aren’t used by the majority of real estate agents in California. There are a few, but not enough. They should be used in more industries here. In retail, they should be be used on cars, even within car yards, I say car yards because again so many are shut on a weekend (when the prospects are not at work (how stupid). They would just need a board, as with real estate agents in their windows (though QR codes are hard to read through windows, not at POS, in my experience), At least the prospect could learn something about the car they can see behind the locked fences. They are mainly barrow boys though unless selling new cars, where they upgraded to Del boys.