A simple solution to stop an Active Shooter

I've often said the only thing that stops a bad guy with a gun is a good guy with a gun. I may have to take some of that back now.

These three simple locks stop people from entering a room. Will it stop them long term, no, but Active Shooters know they have little time to do what they want to do. Time equals more people alive.

These simple locks could help save hundreds of lives
Could this be a deterrent for mass shootings?
Posted by Future X - The Future Is Now on Tuesday, January 26, 2016

Excellent work gentlemen, American ingenuity at it's finest.