Gun violence in the US is a public health epidemic. With partisan battles currently making state and federal legislative solutions elusive, private sector trendsetters are quietly exploring other avenues of opportunity. The Smart Tech Challenges Foundation funds research to advance biometric identification and other security technologies that allow only authorized users to fire their guns. But Colt Manufacturing discovered the technical and political obstacles to smart guns the hard way when it tried to develop a digital lock. Shot Spotter uses acoustic-sensing technology to detect gunshots across a community and alert local law enforcement to their location. Leaders from all three organizations talk about their approaches, and how they can hit the public health target of reducing gun violence?