QR codes — or "Quick Response" codes — are square-shaped barcodes that can be scanned by mobile devices. They are used for a variety of applications, from pulling up a restaurant menu to directing ...

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 ...

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. Quick Response (QR) codes were popular before the COVID-19 ...