QR codes are here to stay. So is the tracking they allow. Fueled by a desire for touchless transactions, QR codes popped up everywhere in the pandemic. Businesses don’t want to give them up. Jenny Evans / Getty Images July 26, 2021 | 2:01 PM Email SAN FRANCISCO — When people enter Teeth, a bar in San Francisco’s Mission neighborhood, the bouncer gives them options. They can order food and drinks at the bar, he says, or they can order via a QR code. Each table at Teeth has a card emblazoned with the code, a pixelated black-and-white square. Customers simply scan it with their phone camera to open a website for the online menu. Then they can input their credit card information to pay, all without touching a paper menu or interacting with a server.