An interesting device. Although I cannot see why officers would want it. More likely to get them into trouble, than exonerate them I would think.
PistolCam®, with it’s patented AUTO-ON technology records 60 minutes of video documentation. Using MPEG4 imaging technology, PistolCam ? automatically records 60 minutes of DVD quality video with sound when an officer’s handgun is removed from the holster. PistolCam?is integrated with an Ultra-High Intensity Tactical Illuminator and Targeting Laser.
Front and profile:
More here.