On Friday February 19th, someone drove past the Lake Merced Golf Club, along freeway 280, and were outside the Dignity Health-GoHealth Urgent Care facility. But their car was most frequently parked outside a specific address in the fancy Noe Valley area of San Francisco.
I know this because a company called Otonomo sells the granular location data of vehicles across the United States and the rest of the world. Otonomo also makes some of its location data available as part of a free trial. The data is supposed to be pseudonymous, linked only to a non-descript identifier for the car, but Motherboard found it is relatively easy to find who a car potentially belongs to and follow their movements. A source pulled data from Otonomo en masse and provided Motherboard with GPS coordinates of drivers in California, Berlin, and other cities, and that data can be mapped to track unsuspecting drivers wherever they go, and to determine their likely home addresses and identities.