@e2371465 
Grrrrr this grates on me. Many places in the Bay Area won't let you order or pay except by QR. I've walked out more than once. There are the usual data and security issues, but what a lot of people don't consider is that mandatory QR scanning discriminates against people who, for whatever reason, don't have smart phones or credit cards. My elderly parents couldn't eat at those places. Seriously fuck that.