protests following the police killing

But in reality, this surveillance technique is thought to be far wider. Law enforcement later expanded its demands for location data to other companies.

Microsoft and Yahoo (which owns TechCrunch) are known to receive geofence warrants, though neither company has yet disclosed how many demands for users’ location data they receive.

In recent years, the number of legal cases involving geofence demands have rocketed.

Police in Minneapolis used a geofence warrant to identify individuals who attended protests following the police killing of George Floyd. The overturning of Roe v.