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 ...

If you spent any time in Chicago's River North Tuesday, you may have noticed a mural with a giant QR code painted on the side of a building. And if you're a Taylor Swift fan, you might know what the ...

The mural, located at 25 W. Grand Ave. in Chicago's River North neighborhood, drew dozens of onlookers and Taylor Swift fans hoping to decode the puzzle NBC Universal, Inc. If you spent any time in ...

If you spent anytime in Chicago's River North Tuesday, you may have noticed a mural with a giant QR code painted on the side of a building. And if you're a Taylor Swift fan, you might know what the ...