I agree, I want this to be an option. There are many easy ways to steal a picture even with this safeguard making it useless.

About stealing for profit fears. That is what watermarks, posting dates and the legal system is for. This system only slows them down a bit yet does NOTHING to protect your images. It will only give a false sense of security.

Honestly if you are afraid your picture will be stolen and profited from, it may be best not to post it online as that is the ONLY way you can be sure to keep it safe.

If people want this system, fine have it as an option. I know it really won't protect our pictures so I would want it off as I like the idea somebody may want it as wallpaper.