You don't even need satellite to track people, the FBI has been getting really good results with a small fleet of Cessnas. https://www.theguardian.com/us-news/

You don't even need satellite to track people, the FBI has been getting really good results with a small fleet of Cessnas. https://www.theguardian.com/us-news/2015/jun/02/fbi-surveillance-government-planes-cities https://www.theguardian.com/us-news/2015/jun/02/fbi-surveill... Not to mention you already carry a mobile phone with both Bluetooth and wifi turned on. You gym plus others knew you have not been there since February.