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.

Many of you reading this have undoubtedly seen a QR (Quick Response) code by now (the thing pictured to the right), but there's just as much -- if not more -- confusion surrounding them today as there ...

Ever since Meta introduced a QR code-based feature to share Instagram profiles, users no longer had to spell out their account name to a new friend or type it out. The simple ‘Share Profile’ button ...