For the longest time we’ve been using UPC bar codes to store strings of information in a compact space on both product labels and people in dystopian sci-fi movies. But as our needs grew and became ...

Software built into the cameras on iPhones and Android phones make quick work of decoding QR codes. How do you do that on a laptop or desktop computer?

As previewed last year, Google Messages is beginning to roll out QR code-based key verification to confirm that you’re “communicating with the person you intend to.” Once available, open a ...

Back in July, Google widely introduced a redesign of the Android QR code scanner, but then rolled it back. The updated interface is now starting to reappear. This is the QR code scanner available from ...