[jpdelatorre]

There's actually a better alternative to this... http://preyproject.com/

[codenerdz]

I have prey on my macbook and tested its functionality by marking the laptop as stolen and can attest that the enduser has no idea that his face is being photographed and screenshots of whatever is going are being taken. Plus its free for up to 3 pcs

[andrewpi]

Actually, on a MacBook, the green camera light will occasionally blink for a split second while the photo is being taken.