QR codes are cool, but they haven't quite caught on en masse yet, because finding cool uses for them have been challenging. One popular use for QR codes is printing them on business cards. Sharon ...

Originally developed in the mid-1990s for manufacturing and inventory control, QR codes most often appear as a small graphic that looks like randomly placed small black squares arranged in a ...

I’m sure you’ve seen one before, maybe on a billboard or in the pages of a magazine. It’s one of those squares with the weird arrangement of black and white boxes, with all the little boxes forming an ...