DefCon’s badges encourage hacking. The best hacks at the conference receive a black ber badge signifying free lifetime admission. This year’s winning badge hack features pulsing LEDs in the bill of the cap that confuses facial recognition systems. We’ll never know whether his design would’ve allowed the guy to sneak into the room where the badges are stored or not, but it’s quite an achievement to make a cat burglar’s dream toy out of these badges: It’s quite a feat.”]
Source: https://gizmodo.com/defcon-badge-hack-fools-facial-recognition-systems-with-5330196