US officials use mobile ad location data to study how COVID-19 spreads | Engadget
▻https://www.engadget.com/2020-03-28-mobile-ad-location-data-shows-how-covid-19-spreads.html
The location info could help researchers, but privacy concerns exist. The use of phone location tracking to keep tabs on COVID-19 is becoming increasingly common, and the US appears to be no exception. Wall Street Journal sources say federal (via the CDC), state and local governments have been receiving location data from mobile ads to help plan their pandemic response. The anonymized info helps officials understand where people are still gathering in significant numbers (and thus risk (...)