[ISN] Stealth wallpaper could keep LANs secure

From: InfoSec News (isn@private)
Date: Sun Jun 20 2004 - 23:19:14 PDT

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    By Ron Coates 
    June 18 2004 
    UK defence contractor BAE Systems has developed a stealth wallpaper to
    beat electronic eavesdropping on company Wi-Fi and wired LANs.
    The company has produced panels using the technology to produce a
    screen that will prevent outsiders from listening in on companies'
    Wi-Fi traffic but let other radio and mobile phone traffic get
    The FSS (Frequency Selective Surface) panels are made in the same way
    as printed circuit boards - layers of copper on Kapton polymer - and
    used on stealth bombers and fighter jets. They come in two varieties:  
    passive, which is effectively permanent, and active, where various
    areas can be switched on and off to enlarge or limit the area of the
    The panels are 50 to100 microns thick and can be applied to most
    surfaces including glass. A company spokesman claimed that they also
    helped reduce "noise" in buildings where a number of companies operate
    their own separate LANs.
    BAE Systems developed the new material with 145,000 of funding from
    the Radiocommunications Agency, which is now part of Ofcom. BAE says
    the material is cheap and it will be developing it commercially
    through BAE's corporate venture subsidiary.
    There is no timescale for its commercial availability.
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