Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Quick Response (QR) codes were popular before the COVID-19 pandemic ...

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 ...

Another handy and free generator is QR Code Generator. It allows you to create static and dynamic QR codes (editable even after printing) that you can use for different purposes and in various formats ...

This story originally featured on Popular Science. Quick Response or QR codes were popular even before the coronavirus pandemic, but now they’re everywhere: from restaurant menus and tickets, to ...