http://www.sciam.com/article.cfm?articleid=6670BF9B-E7F2-99DF-3EAC1C6DC382972F
A company is selling a window film that blocks most RF signals. The
obvious application is TEMPEST-shielding. I'm skeptical that it will
be very popular -- most sites won't want to give up Blackberry and cell
phones...
--Steve Bellovin, http://www.cs.columbia.edu/~smb
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