http://www.parentcentral.ca/parent/newsfeatures/article/842467--posting-pictures-online-reveals-more-than-you-knowBig Brother has arrived, in case you missed it. In fact, you probably did miss it.
Those images you’ve been uploading to the web — your amusing YouTube video, the car-for-sale pictures on Craigslist, the TwitPic updates — may be embedded with coding that can reveal where the picture was taken, according to a report from the International Computer Science Institute, an independent, non-profit research institute in the United States.
GPS-equipped smart phones, iPhones and digital cameras embed location information in photos as a service to users to help them locate, sort and identify pictures. But most people either don’t know about the embedding or don’t understand how it can be abused, according to report co-author Robin Sommer.