I have a friend who calls me occasionally to come help him with various little things having to do with the technology at his house. This week, one of his requests was to learn more about QR codes and ...

Many of you reading this have undoubtedly seen a QR (Quick Response) code by now (the thing pictured to the right), but there's just as much -- if not more -- confusion surrounding them today as there ...

Hundreds of QR codes have appeared on boarded-up homes throughout Baltimore over the past month, as part of a city effort to help residents seeking information on vacant properties. Last year, the ...