They are everywhere, but maybe you haven’t noticed them. Or if you did, maybe you didn’t know what they were. If you look more closely, you’ll see in the corners of most advertisements these days, futuristic squares that look like a cross between a barcode and a pixilated image.
So what are they? They’re called QR codes and though they started in Japan in the mid-90s, they’ve only recently become popular in the US. QR codes are currently one of the most buzz-worthy tools for marketers and they seem to be popping up on just about everything, from magazines to postcards to food packaging.
Spotted Everywhere: Small Square Pixelated Codes | LegalZoom