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Article View: comp.security.misc
Article #87

Re: COMPUTER DISKS THRU AIRPORT X-RAY ? ASAP

#87
From: William Unruh
Date: Mon, 03 Aug 1992 21:59
8 lines
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flaps@dgp.toronto.edu (Alan J Rosenthal) writes:

>....  For floppies, I
>highly recommend wrapping them in aluminum foil.  If people laugh at you, tell
>them it's a Faraday cage.  It really works.  

AT 60Hz the skin depth of Al  is a lot bigger than the thickness of the
foil.- ie, it does not work that well as magnetic shielding.  
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Message-ID: <unruh.712879173@physics.ubc.ca>
Path: arc1-ca.pugleaf.net!sparky!uunet!destroyer!ubc-cs!unixg.ubc.ca!physics.ubc.ca!unruh
References: <15844@pitt.UUCP> <1992Aug3.095050.22548@jarvis.csri.toronto.edu>

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Newsgroups: comp.security.misc
Path: arc1-ca.pugleaf.net!sparky!uunet!destroyer!ubc-cs!unixg.ubc.ca!physics.ubc.ca!unruh
From: unruh@physics.ubc.ca (William Unruh)
Subject: Re: COMPUTER DISKS THRU AIRPORT X-RAY ? ASAP
Message-ID: <unruh.712879173@physics.ubc.ca>
Sender: news@unixg.ubc.ca (Usenet News Maintenance)
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Organization: University of British Columbia, Vancouver, B.C., Canada
References: <15844@pitt.UUCP> <1992Aug3.095050.22548@jarvis.csri.toronto.edu>
Date: Mon, 3 Aug 1992 21:59:33 GMT
Lines: 8