  In response to the COVID-19 pandemic, both voluntary changes in behavior and
administrative restrictions on human interactions have occurred. These actions
are intended to reduce the transmission rate of the severe acute respiratory
syndrome coronavirus 2 (SARS-CoV-2). We use anonymized and/or de-identified
mobile device locations to measure mobility, a statistic representing the
distance a typical member of a given population moves in a day. Results
indicate that a large reduction in mobility has taken place, both in the US and
globally. In the United States, large mobility reductions have been detected
associated with the onset of the COVID-19 threat and specific government
directives. Mobility data at the US admin1 (state) and admin2 (county) level
have been made freely available under a Creative Commons Attribution (CC BY
4.0) license via the GitHub repository
https://github.com/descarteslabs/DL-COVID-19/
