Body-worn cameras capture audio and video that is 100% impartial in its use, presenting evidence with a blind eye to officer, citizen or suspect. They’ve come a long way since a large camera on your patrol car dashboard.
With experimental use dating back to the late 1990s, body-worn cameras and the evidentiary audio/video they produce have become a mandated standby of all law enforcement agencies and not just in the U.S. When first developed, law enforcement agencies embraced the concept of mobile video through the use of dashboard-mounted cameras or “dashcams.” That video was captured at the whim of the officer who would turn it on when he felt it might be needed. Many a drunk driver’s field sobriety battery testing was caught on video and used in court as evidence. It didn’t take long for those who manufactured video cameras and those who used them for capturing potential evidentiary video to realize that video captured from the officer’s perspective would be of greater value.