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.

During Apple’s keynote at this year’s WWDC 2017, Craig Federighi announced iOS 11 support for the oft-forgotten quick response (QR) codes. While users stateside may not use QR codes regularly, for ...

For a short time, the QR code was the poster child of marketing. While the frenzy of discussion about them disappeared almost as quickly as it appeared, QR codes still have their uses in moving ...