Perhaps they don't. This is just a beta program. Later on, they'll roll it out to keep track of everywhere everyone goes. They just mentioned fast food to keep people unconcerned.
Why in the world would they want to know where I go? I go to: the gym, Whole Foods, Tyson’s Corner mall, Tyson’s Corner Galleria, the gas station, the dry cleaners, the spa, Wegman’s, the pet food palace, the bodega with the good limes and avocados, Vitamin Shoppe, the dog groomer, the dentist, K-Mart and Target, etc. How boring is that? And why would they want to know, and why would I care if they knew where I go? There, I just posted it on the Internet. I am still not getting this. I am sure the places I go are very similar to the places millions of people go. Why should they assign someone to track my errands? Where are those monitors going to come from? My monitor will be bored stiff and screaming for mercy in less than a week. That is how I will defeat them.