Shopping under surveillance: How retailers track you & how to be invisible

Fox News Flash top headlines are here. Check out what's clicking on Foxnews.com. If you have a pulse and an internet connection, companies want all the details they can get on what you're willing to buy -- and it's getting harder to tell where they're getting all that info. Retailers can now track what customers purchase to influence their buying patterns. Loyalty programs collect data on your purchases, frequency and preferences -- in exchange for deals.