for everything from payments and registrations to advertising and information. You'll see them in restaurants in place of paper menus, on product packaging, on signposts, on parking meters — and even ...

Jeff Werner is a software engineer and has been writing this column since 2007. Question: I’m another one of your older readers, who watches in quiet wonder as technology advances and the world ...

As a way to reduce contact during the pandemic, businesses put QR codes to good use, enabling people to safely order food, pay for parking, redeem offers, and more, all without risking COVID-19 ...