As many Americans watched in horror as protests broke out in Ferguson, Mo., after the Michael Brown police shooting, Brian Hedeen felt compelled to find a solution.

People, he said, were unclear why the officer pulled the trigger and killed Brown — leading to weeks of unrest. That uncertainly led him to start a company that would give the public some clarity. His business, Viridian Weapon Technologies in Minneapolis, Minn. is one of two companies offering technology that places a camera on a police officer’s gun — rather than the body.

Hedeen, and other proponents of the new technology, say gun-mounted cameras offer a better view of a police shooting and are more precise than body-worn cameras.