If you use Facebook, every time you upload a photo and tag it in Facebook you are helping build their Bio-Metric Database. Facebook has compiled so much information they recently bought http://www.face.com which is a company that developed a platform for facial recognition from photos. Highend retail stores are already using it to identify high profile customers such as celebrities. If a face is recognized, information is sent to an employee providing details such as size, favorite buys and shopping history.
FACEBOOK is only steps away from being able to track your curser on screen. Actions such as how long your cursor hovers over something and whether your newsfeed is showing on the screen of your phone seem to be just the beginning.
— Read Wall Street Journal Article
WATCH VIDEO REPORT: http://youtu.be/7Ssm2Dcl8As
Another Article on this: http://www.8newsnow.com/story/23830552/report-facebook-testing-software