The Ultimate Guide to Faraday Cages for Emergency Preparedness

by Jay Speakman

Faraday cages—metal enclosures named after Michael Faraday—shield your electronics from destructive electromagnetic pulses (EMPs) by redistributing incoming charges around their exterior, leaving the interior field-free. Whether you build a DIY foil-lined box or buy a commercial bag, these enclosures can protect phones, radios, GPS units, batteries and even medical devices from solar storms, nuclear blasts or man-made EMPs. Incorporate Faraday cages into your emergency plan to ensure your vital gear stays functional when the grid and networks go down.

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