Humm let me explain:

* I have 2 entities that have a enable_scan=on;
* I have 2 projectors
* One of the entities has a actor_follow function; the other one is the player
NOw:
When the player and the other entity are under the projector, Both get the projetor material... but , just one works correctly because:

-> It seems they share the same material, so if the player moves , the projetion on the other entity will move when the player moves, and if the other one moves , my projetion will pause and give the control to the other one.

I hope you understand.. Thanks.