‘Geofence’ Warrants Threaten Every Phone User’s Privacy.

“…The “Geofence” in this context refers to cell phone location data collected by Google from users of its Android operating system, as well as iPhone users who use apps such as Google Maps. Location tracking can be turned off, but most users allow it for the convenience of getting directions, tracking their daily jog, or finding the nearest Chipotle. The Government’s warrant demanded location history for every Google account holder within a range of longitude and latitude roughly corresponding to the Capitol building on the afternoon of January 6, 2021, along with similar data from that morning and evening (to filter out Hill staff and security guards).

It’s not clear this information was even needed: This defendant was apprehended within the building that day, carrying knives and pepper spray, and features on various security cameras — his whereabouts are not in question. Many of his coreligionists were considerate enough to live stream their antics themselves. While tracking down every participant in what was dubbed the Beer Belly Putsch is impractical, prosecutors have not lacked for defendants, or for evidence against them. But the government nonetheless decided to resort to a level of mass surveillance without precedent in history or criminal law…”