What about a cache that you need to locate and sign, but the only way you can claim the find is if you log a picture of yourself at some location in the world...where there is a cache site...and log it into you tube, or whatever you planned to do with it. I am not up on that stuff so don't know how it would work, but can 't you do it with your phone somehow... or their own video.... I know how far my travel bugs have made it, and doubt very much that your camera left somewhere would last. Someone who is just lurking around may just take it away..............and be very happy.