Comment Don't tell them that you are secretly using *nix - (Score 1) 284
- to gimp & g'mic fourier watermark each resource before putting them back into their layers in Photoshop. But if you are really hot, you just export the psd directly from gimp. When they give it back, you flatten and run fourier analysis. If the watermark appears, you know they are cheating. Then just sudo them a new sandwich from the console on your MacBook.