Are Geofence Warrants Sweeping Up Your Cellphone Data?

Ari Ezra Waldman, a professor of law and computer science at Northeastern University Law School, discusses the spike in police use of geofence warrants to get location records for all mobile devices within a virtual perimeter. His new book is, "Industry Unbound: The Inside Story of Privacy, Data and Corporate Power."

June Grasso hosts.

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