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.

This story originally featured on Popular Science. Quick Response or QR codes were popular even before the coronavirus pandemic, but now they’re everywhere: from restaurant menus and tickets, to ...

QR codes are ubiquitous and incredibly useful for quickly sharing small amounts of information. Although QR (short for Quick Response) codes were originally invented at a Toyota subsidiary company in ...