The Faraday cage (or shield), named after Michael Faraday, is a device that is used to protect from electromagnetic radiation. A Faraday cage may be formed by a continuous covering of conductive material, or a mesh of such materials. This creates a shielding effect for any item inside the cage and protects those items from radiation. The effects of the cage can be enhanced by layering conductive and non-conductive layers - this creates a cage within a cage within a cage, providing additional protection without the need of specialised materials. Though it may sound complicated, you can make your own Faraday cage from aluminum foil. You can also make a larger version using a steel trash can.