Designed as a high-tech marketing resource, QR (quick response) codes have many useful applications. These (usually) black-and-white algorithmic codes are gateways to a potential multimedia nirvana.

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.

Technology speeds up our world, enabling faster turnaround times, streamlined efforts and near-instant transactions. At the same time, today’s consumer is more interested in buying the right item than ...