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I have been wondering about a couple of things. First, Faraday cages protect electronics within them from EMPs, right? So would the metal body of a car act as a Faraday cage and protect the electronics within the car? And I was also wondering... there is a foil-lined envelope I can keep my credit card in to prevent a passerby with a special machine from stealing the info... I wondered if a similar envelope could protect my phone from being located all the time? And maybe that would also protect the phone from EMPs? Note: I am not going anywhere...

Electromagnetic pulses occur at various frequencies depending on how they’re caused, and you need various strategies to protect your electronics.

WASHINGTON – The threat posed to the national security of the United States by Iran was likened only to the one posed by Nazi Germany in the 1930s, by former House Speaker Newt Gingrich, who suggested Tehran could be planning for a pre-emptive nuclear electromagnetic pulse attack on America that would turn a third or more of the country "back to a 19th century level of development." Gingrich made the stunning statements, which echo warning of other congressional leaders and national security experts, in testimony before a subcommittee of the Senate Homeland Security and Governmental Affairs Committee last week.

AS MARK THOMPSON of Time magzine writes, "Every war has it's wonder weapon. And in an upcoming war aginst Iraq, we are told to "get ready to meet the high-power microwave." The way Thompson describes it, the "HPM" sound almost too good to be true: They "fry the sophisticated computers and electronic gear necessary to produce, protect store and deliver [chemical and biological] agents. The powerful elctromagnetic pulses can travel into deeply buried bunkers through ventilation shafts, plumbing and antennas. But unlike conventional explosives, they won't spew deadly agents into the air, where they could poison Iraqi civilians or advancing...