On Wed, 11 Oct 2000, jim bell wrote:

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A popular, but false, myth. The video cards radiate more than the CRT's. Laptops tend to be the worst offenders.

--Lucky Green <shamrock@cypherpunks.to>

As to the video cards... Sorry, Lucky, but you're going to have to support this a little better. Emissions are a function of the signal voltage in a conductor, and the extent that this conductor is free to emit.

NP. There is plenty of conductor in a laptop. What tends to be missing, though, is shielding. In particular, laptops tend to have plastic cases. Without a metal case, even a badly designed, at all, a little signal goes a long way. You also may wish to inquire with Ross Anderson or Markus Kuhn what type of computer their group uses for the van Eck demos and why. Last I talked about this with them, it was a laptop. Have fun, --Lucky Green <shamrock@cypherpunks.to> "Anytime you decrypt... its against the law". Jack Valenti, President, Motion Picture Association of America in a sworn deposition, 2000-06-06