This website will direct you to some cheap way to defend against radiation and microwave weapons. I've carried mine a year or two and thought it might be interesting to share. Also not really a secret so why not. These coins ionize the body, and react to most toxic energy by trying to dissipate it. The website might talk more specifically about it. This is one of the few radionics devices that actually does in fact work. Only about 5 bucks a piece, so completely up to you.