I've seen some police departments do this already with their tasers. The moment the safety is disengaged, it starts recording. For example, here's one of the a

I've seen some police departments do this already with their tasers. The moment the safety is disengaged, it starts recording. For example, here's one of the add-on modules Taser makes for this: http://www.taser.com/products/on-officer-video/taser-cam-hd http://www.taser.com/products/on-officer-video/taser-cam-hd