> But geofence warrants are sweeping in nature and are often used to compile a suspect list to further investigate. Yes, this is how investigations work. The

> But geofence warrants are sweeping in nature and are often used to compile a suspect list to further investigate. Yes, this is how investigations work. The actual problem with this approach is that it's lazy and assumes everybody involved in the crime is on-the-grid. Criminals could subvert the whole process and fill the dragnet with false leads by refusing to carry a phone.