The app is a tool to preserve documentation of police brutality.

The Californian branch of the civil liberties group ACLU launched a free smart phone app on Thursday to guarantee they can document and preserve recorded instances of police brutality.

The app allows ordinary people to both record and document encounters with state authorities from their cellphones while having it instantaneously transmitted to the ACLU’s servers. In light of past instances in which authorities have deliberately confiscated or destroyed such evidence, the app would guarantee the recordings’ preservation. It also allows people to send an alert to anyone in close range to the incident in order to potentially facilitate an organized community response. Get the ACLU App.