All you need for laser graffiti is -

a computer or laptop

a projector that can be connected to the laptop

any camera, again that can be connected to the computer, a webcam is a good idea

a 50mw 532nm or higher laser pointer

The software is freeware and can be downloaded from Muonics site (link above)

Now i found the software very hard to use and a pain in the ass to set up! but i did get it working here are the results -

I was really excited to be doing laser graffiti, i couldnt wait! On Muonics web site they seem to have laser graffiti working really well, i struggled to get it working full stop. After lots of playing i really couldnt get any better results than the two above videos. I was not impressed with laser graffiti, either i was doing something wrong or it looks better in their video than in real life.

I wouldnt run out and buy a projector just for laser graffiti.

In my opinion laser graffiti is awesome in theory but slightly lacking in pratice.