While the debate over how to stop gun violence rages on, some business are trying to step up and take gun safety into their own hands, marketing bulletproof backpacks and calling for 3-D printed safety designs.

A British company called Concept Smoke Screen is now offering up its Security Smoke Screen as a solution to gun violence in schools. Push a button, and thick, non-toxic smoke fills the room, obscuring potential victims from a shooter's gaze. The product was developed to protect bank vaults, and has been used for more than 30 years, but this is the first suggestion that we install it in classrooms.