You know full well that all the innocent crap you spam out to social networks can be used to pinpoint you, highlight your friends and track your favourite places, building up a perfect record of your little life. Defence specialist Raytheon is automating this data harvesting process with a view to patenting a comprehensive tracking tool.

The technology created by Raytheon and revealed in a video found by the Guardian, is called Riot (Rapid Information Overlay Technology) and uses location tags, EXIF data, social network postings and more to build up a complete snapshot of a person's life.

It's not doing anything particularly terrifying or unusual, but when assembled to create a full picture of a person's life it appears rather threatening. Using Foursquare check-in data it can predict where someone may be at a particular time, also pulling out personal photos of friends and generally building up a portfolio of mined data, letting you know where someone may be, what they look like and who they're likely to see there.

Raytheon says it hasn't sold this auto-stalking tech to any customers yet, although it admits to sharing some of this tech with the US government in 2010. [Guardian]