Our guests, neema sink giuliani, legislative counsel ott the aclu, and Mike Doucette who is a commonwealths attorney in virginia. How do police use cell phone tracking today . Guest we use it a number of different ways. Obviously, we use it to try to find individuals in realtime as well as Historical Information, try to get that information as to where people have been in the past. In order to solve crimes that have occurred or are about to occur. So, but we do use it very much in that capacity. Host in your view, is it an effective tool . Guest it can be, absolutely. I mean, i can hi of one particular i can think of one particular very gruesome homicide we had in lynchburg a couple of years ago where while the case wasnt resolved by cell tower the information, that basically broke the case. We would have never found the suspect but for the information. So it can be very helpful. Host ms. Guliani, are there restrictions on how the police can use cell phone tracking . Guest based on wha