http://gizmodo.com/5019480/image-fulgurator-does-real+world-hacking-of-other-peoples-photos

Apparently it detects flash of peoples cameras and triggers it's own flash which results in projection of an image - into to 1st cameras image. If that makes sense? :)

Hmmm very weird. I would project images of the Grim Reaper or something if I had one of those :D

I love it, very amusing. Hacking reality. :D