System of Proof
Phone conversations are rife with nuggets you wish you could record -- your buddy swearing he'll give up smoking, your coworker asserting that Christian Bale is "attractive" -- but you ain't no G-Man. Enable your sneakiness, with System Of Proof.
Since not everything important goes down over the phone, System lets you use the same dial-in to turn your cell into a portable mic -- use it when you get pulled over, and you'll have hard evidence that you got a ticket despite desperately telling the officer he was "attractive".