US government officials using mobile ad location data to study coronavirus spread
US government officials are using cellphone location data from the mobile ad industry —not data from the carriers themselves— to track Americans’ movements during the coronavirus outbreak, the Wall Street Journal reports.
from https://www.theverge.com/2020/3/29/21198158/us-government-mobile-ad-location-data-coronavirus
https://cdn.vox-cdn.com/uploads/chorus_image/image/66570819/acastro_190204_1777_privacy_0001.0.jpg