secretly records video or audio of any encounter and once you select which option to use, the app appears to have closed when in reality, it is saving you from something very bad. Anything recorded is sent to the ACLU of NJ for their review, and is stored on a secure server that the cops can't get to.
The app also contains lists of your legal rights, so when PoPo says that he wants to search your car and if you don't consent to it he will arrest you, you can tell him (politely, of course) that he can't do that. We don't know about you, but an app that can keep us out of prison is one we want on our phone. Police Tape is available foir free from the Google Play Store for those using Android 2.2 or higher which is just about everyone without a Garminfone. An iOS version of the app is awaiting Apple's approval, which should be later this summer.
source: GooglePlayStore via Phandroid