US police agencies have been using a low-cost surveillance tool to track people’s pho
 

Police and law enforcement agencies, even in small areas with fewer than 100,000 residents, have been using a low-cost phone tracking tool called Fog Reveal, according to AP and the EFF. AP has published a report detailing authorities' use of the tool since at least 2018 for various investigations, including to track murder suspects and potential participants in the January 6th Capitol riot. The tool, sold by Virginia company Fog Data Science LLC, doesn't need a warrant and can be accessed instantly. To get geofence data, authorities usually have to issue a warrant to companies like Google and Apple, and it could take weeks for them to get the information they need.

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