Excerpt from article written by Jennifer Lynch, EFF Senior Staff Attorney:

The U.S. Court of Appeals for the Fourth Circuit, in a wrongheaded and potentially devastating opinion last week, decided that purely because this data is "revealed" to your service provider, the Fourth Amendment doesn't protect it, regardless of its sensitivity or our lack of control in when or how it's generated. If you've decided to carry around and use a cellphone, and law enforcement wants to know where you've been, they don't need to show a judge probable cause that a crime may have been committed to get this data.

Monday, June 6, 2016
National Law Journal