I've been concerned about radiation from my PS3 controller for years now. I have a 3rd party controller that has a USB dongle that communicates to it via infrared but that controller has a massive dead zone in the middle of the controller and is pretty useless for most games that require good/accurate/fast control (it's okay for JRPG's). I'll be getting a PS4 but have the same concerns. Does it use Blue Tooth as well and does anyone know of a way to protect yourself from this radiation?