An error message has been added to Source sandbox game Garry’s Mod, allowing the developers to catch pirates. The message only displays when pirated copies of the game are booted up, and tells the user that it is “Unable to shade polygon normals.” It also follows up with the users 64-bit Steam ID.
Garry’s Mod Developer Enables Error Message To Catch Pirates
It’s not too late for a Charlie Sheen quote! WINNING!