QR codes are certainly practical, but they're also dumb and stupid and ugly and instantly ruin almost anything they're placed on. That's why this tech that uses simple light as a replacement for QR codes is so awesome.
This system uses LED lighting to project invisible identification codes on objects
Nakagawa is envisioning a number of scenarios where the technology could be applied. These include providing merchandise information and, in the future, possible electronic payment services; streaming text, audio, and video information on a museum, art gallery, or tourist site; and for music downloading simply by pointing the phone at a singer on stage lit by the appropriate LED light.
QR Codes Really 'Branching' Out Mobile Marketing Watch In Matthews Park (in Norwalk, CT), each tree has been assigned its own QR code, so all you have to do is scan the code with your smartphone and you'll be instantly transported to a world of...