Movie or photo scribbling in the building with a laser pointer

I'm doing scribbles in the building with something like a laser pointer. Unlike graffiti such as paint, it is good to be able to erase it immediately.

Details are as follows.
YouTube - All you see is ...


High-quality version movies are at the top of the following article.

Graffiti Research Lab >> L.A.S.E.R. Tag

Pacman.


Graffiti is embracing the beautiful night view.


It seems that it could be seen from far away.


It seems that it is projecting with such equipment.


People who graffiti in unanimity.


It seems that it also appeared on one side of the newspaper.


You can also see pictures from the following.

Flickr: urban_data's photos tagged with lasertag

The software I was using seems to be the following.

Theodore Watson - GRL Laser Tag Rotterdam - how to and source code

Apparently it seems that the projector's light hits the place pointed by the pointer. This seems to be usable even for promotion.