Please review the link above. It turns out that your camera can betray you by revealing your location. And, what is worse is that if you take pictures of your kids and post them the picture can be opened and their location is now made available to anyone who knows how to use this technology.
Well, here is another one that is interesting and worth checking out. I won’t spoil it by telling you a lot about it. I think it would be better if you went and looked for yourself. The link is: http://bodhicap.wordpress.com/about/a-brief-history/