NEW - The from tens of millions of phones in the United States to perform analysis of compliance with curfews. 

The CDC paid $420,000 for a year of access to the cell phone location data from the data brokerage SafeGraph, to track your compliance with COVID-19 lockdown measures. 

https://www.vice.com/en/article/m7vymn/cdc-tracked-phones-location-data-curfews 

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