Fueled by a desire for touchless transactions, QR codes popped up everywhere in the pandemic. Businesses don’t want to give them up. By Erin Woo SAN FRANCISCO — When people enter Teeth, a bar in San ...

You’ve probably scanned a QR code this week without thinking twice about it. It might’ve been on a menu, a package, or a flyer. What matters more is what happens after you scan it: you expect it to ...