Can you hear me now? Feds admit FBI warrantless cellphone tracking ‘very common’
Source: Washington Times.
FBI investigators for at least five years have routinely used a sophisticated cellphone tracking tool that can pinpoint callers’ locations and listen to their conversations — all without getting a warrant for it, a federal court was told this week.
The use of the “Stingray,” as the tool is called, “is a very common practice” by federal investigators, Justice Department attorneys told the U.S. District Court for Arizona Thursday, according to the American Civil Liberties Union.
Installed in an unmarked van, Stingray mimics a cellphone tower, so it can pinpoint the precise location of any mobile device in range and intercept conversations and data, said Linda Lye, staff attorney at the ACLU of Northern California in a blog post about the case.
In a rare public discussion of federal electronic surveillance capabilities and authorities, Justice Department lawyers told the court hearing that, instead of a warrant, the FBI operates Stingray and other cellphone-mimicking technology under the authority of “pen register” orders. These court orders, also known as “tap and trace” orders, are generally issued to allow investigators to collect only so-called “metadata” — like all phone numbers calling to or called from a particular number.
Read more: http://www.washingtontimes.com/news/2013/mar/29/feds-fbi-warrantless-cell-tracking-very-common/
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or garden-variety criminal, especially those pot-user-type louts, and if just one pot-user-type lout could be ferreted out, violation of constitutional rights of millions at a cost of billions would be such small prices to pay to achieve this modicum of peace of mind. 
so the 4th amendment argument is just so much fluff? 
I was wondering why my carrier map lists no coverage in my area yet I have it. Thanks FBI roving van! 
