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 ...

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.

From their humble beginnings as tools for the automotive industry to being major players during the COVID-19 pandemic, QR codes have come a long way to become must-have tools for marketing and ...