How to Find a Perp? Just Ask Their Cell Phone.

...the cops deployed a secretive device called a stingray, which operates as a fake cell phone tower used to track targeted phones.  

Though law enforcement typically fights attempts to learn how stingrays work or how often they are used, a court victory by the American Civil Liberties Union (ACLU) has just unsealed Tallahassee police testimony of exactly how the 2008 cell phone hunt happened.

This newly released transcript (PDF) provides what is likely the first-ever verbatim account of how stingrays are used in actual police operations. And it shows that stingrays are so accurate, they can pinpoint the very room in which a phone is located. (more)