Android and iOS both have built-in tools to easily open QR codes from screenshots.

You probably scan QR codes without giving them a second thought—but how do those little black-and-white squares actually work? This month's Bits & Bytes explores the surprising history, clever ...

I'm not talking about the one in Apple Notes.

Sanuj is a freelance tech journalist with over six years of experience covering smartphones, wearables, and consumer technology. He currently writes for Android Police, Tom's Guide, Android Central, ...