Our Key Ring Shields offer another option for shielding against the harmful effects of our wireless and electrical society. They are made with a non-toxic plant based resin. Using Nano Crystalline Technology, they are embedded and encoded with 240+ resonant frequencies that will work in conjunction with your body's Biofield to bring greater energy, balance and relief. Simply attach to your keys. If you always have your keys "On You", why not have them work "For You"! When you slot your keys into your vehicle's ignition, the metal on the key chain becomes the conductor of our resonating formulation of frequencies. This impacts your vehicle's digital mechanics as well, as metal is a conductor!