A small number of police departments are showing interest in a new type of video camera that can be mounted directly on officers' guns, saying it may offer a better view of officer-involved shootings than body cameras. Some law enforcement officials and civil rights groups are skeptical.
Among the cons, they point out, is that gun cameras start recording only after weapons are removed from holsters and won't capture what led to officers drawing their guns, or other interactions with the public.
They also say they should be used only as a complement to body cameras.
Besides the better view, supporters say the pros include lower video storage costs because gun cameras record much less often than body cameras, and a feature in some models that instantly alerts dispatchers and nearby police via wifi and Bluetooth when officers draw their weapons and may need help.
Officers' arms, walls and other objects can get in the way of body cameras, as they did in the New York City Police Department's fatal shooting of Miguel Richards last month. Officers' body cameras also may not be turned on, gun camera proponents say.
"It's kind of cutting-edge technology now," said Assistant Chief Michael Kovacsev, of the St. Petersburg, Florida, Police Department, which tested gun cameras this year and is also deciding whether to use body cameras.
"One thing about the gun camera is you can actually see what's going on," Kovacsev said.
"You actually get to see the viewpoint of the officer where the weapon is pointed."