"Search warrants to Google and the phone companies sought geolocation information drawn from GPS data, nearby Wi-Fi access points, and Bluetooth beacons. In response, #Google provided maps showing the suspect’s path within the Capitol building, with circles reflecting a 10-meter radius of accuracy"

https://www.lawfareblog.com/what-do%E2%80%94and-will%E2%80%94-criminal-prosecutions-jan-6-capitol-rioters-tell-us