Yes, tin foil hats actually do help. More on that in the video,....

The entire video is very informational,...but can kind of overload your brain if you are not a technically-inclined person. Just skip to the 23:00 minute mark to observe how you can armor your protest sign to shield you from energy beam weapons. But to understand it all, watch from the very beginning. Watch it as many times as necessary to understand the tech behind the weapon.

We test a few different methods for protecting yourself against an LRAD system. Nothing - 3:54 Earplugs - 4:50 Standard Headphones - 5:54 Electronic Headphones - 6:46 Face Shield - 8:21 Riot Shield - 9:23

We take the LRAD to our warehouse + @iStencilsOnline and show it to some "volunteers". If you'd like a more detailed explanation of the LRAD watch our previous video.

We test our DIY LRAD outside with a "volunteer" and then move inside to go over the details and build of the LRAD system. You'll see what speakers, enclosure, amplifier, electronics, etc. we use for this very affordable LRAD.