Super creepy Thanksgiving study comes with extra helping of smartphone surveillance

It's that time of the year again when Americans come together with friends and relatives to share a hearty meal and not think about the world falling apart around them. Or, alternatively, to argue about the different politicians responsible for the crumbling state of our society and planet. 
What Thanksgiving revelers might not realize, however, is that the precise geographic details of their communal experience are being recorded, analyzed, and monetized by a combination of smartphone apps