Among the many changes brought about by the pandemic is the widespread use of QR codes, graphical representations of digital data that can be printed and later scanned by a smartphone or other device, ...

QR code scan with stop symbol on it. With great convenience comes great responsibility. QR codes have opened up a whole new world of ease for consumers and businesses. But as with any new tech, ...

CHICAGO — Are they black-and-white bathroom tiles? Newfangled bar codes? Postage stamps honoring artist M.C. Escher? Thanks to increasingly prevalent smartphones, many marketers and organizations are ...