LOS ANGELES — QR codes are on the rise. I’ve spotted them everywhere, from subway ads (yes, we have subway ads in Los Angeles) to billboards to movie posters to business cards. And so they’ve ...

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 ...

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 ...