QR codes–square, dot-matrix variants of the venerable UPC–are becoming an increasingly popular way to share information such as URLs, contact details, GPS coordinates, and calendar events. The idea is ...

QR codes are popular elsewhere in the world, and catching on in the U.S., but one barrier to common use is the need for a special app on a smartphone to read them. Not a problem now, as even ...

We live in a world where everything is becoming more digital by the day, and many people have started using QR codes to store data and URLs. The codes from QR are essentially groups of black and white ...