US supreme court rules geofence warrants require constitutional privacy protections

Law enforcement’s use of warrants sweeping smartphone location data requires privacy protections, court rules US supreme court decisions – live updates The US supreme court has ruled that law enforcement’s use of sprawling warrants that sweep up smartphone location data requires privacy protections under the fourth amendment, in a boost to critics who view their use as an unconstitutional dragnet. Justice Elena Kagan wrote the majority opinion.