Wi-Fi Shield is special box that has a protective layer which blocks electromagnetic radiation coming from the Wi-Fi router device thus creating a safe zone without losing your signal. For example if your Wi-Fi router is located next to your working area, kitchen table, sofa or bed, by placing the router inside this box you create a safe zone so your body is not exposed to electromagnetic radiation. So you can carry on with your life as normal with the safe knowledge you are safe and protected.