Interesting. I spent a month in San Diego earlier this year, but maybe I didn't go to the right places, or maybe it's because San Diego is conservative relative to some other parts of California.
Some restaurants paid a lot of money for QR-code things, and those push it from some kind of "sunk cost" fallacy I feel.
Out of 5 restaurants in Miami only two had QR codes, and one revealed menus instantly at the slightest hint that someone at the table couldn't read the code.
