Dynamic Lighting

I noticed for dynamic lighting a player can just move his token around the map to reveal everything without DM knowing. Is there a way to prevent them from seeing whats behind doors,walls, etc.?

Fog of War

Without the GM knowing? If you mark the checkbox "only update on drop," the player's view won't update until they stop moving their token, and you'll be able to see them checking out areas they aren't supposed to. As Michael says, though, Fog of War combined with Dynamic Lighting will let you create areas of darkness the player still can't see, regardless of moving their token there. I have also written a Collision Detection script , although that requires a Mentor account. Finally, you could simply ask your players to not do that. If your players can't/won't listen, you need better players.

Alright thank you for the help guys. I'll probably just use Update on Drop.

or tell your players that they will not be invited back if they let their tokens wander. I had this issue at first, and threw out one warning, and it stopped.

Fog of war works well if this continues to be an issue. Or take the player's control of token away till he/she learns that it is impolite to act thusly.

Of course the "astral projected" character could trigger all of those encounters at the same time. I'm sure all the other players will thank him for that.

I would ask them nicely once, tell them firmly once and drop an ancient Red Dragon on the party the third time. Rolling up characters is a wonderful learning experience, reinforces the fact that the GM is not god, he is all of the gods...