A cereal box that plays a video tutorial on making breakfast. A wine label that tells the story of its vineyard. A snack wrapper that launches a game on your phone. These aren’t scenes from a ...

QR codes are pixelated black and white squares that perform magic when we point the cameras on our phones at them—but what’s going on that makes this little spell possible? QR codes are akin to the ...

For years, QR codes sat quietly in the background of consumer tech useful, familiar, but far from exciting. They appeared on ...