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.

QR codes have become ubiquitous short cuts for everything from account log-ins to restaurant menus, but are we at risk of running out of codes?

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 ...