TNGames Gaming vest

I tried the TNgames vest which has a unique feature : air is being pumped inside as you get shot in an FPS game. The effect is really funny but what’s intriguing is how they do it. Actually the device works on regular game consoles through a small device connected on the video output and analyzing the video (!?!?) to find out if you are being shot and where you are being shot at … They wouldn’t disclose more (and god I tried to know more) but that makes me even more curious ! Retails at 169USD.