Perhaps no symbol is as emblematic of dining out in the modern era as the QR code. It graces our tables at restaurants, beckoning us to pull out our phones and scan. QR is short for "quick response," ...

QR codes can be used to pull up a menu in a restaurant, get more information at museums, pay for parking, etc. Those black and white QR codes are everywhere. And even though QR codes were invented in ...

Kristen Hawley writes about the restaurant business from San Francisco. She's the founder of Expedite, a weekly restaurant technology newsletter highlighting news and big ideas about the future of the ...