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Groups > alt.folklore.computers > #161233

Re: enigma

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On 2016-03-19, J. Clarke <j.clarke.873638@gmail.com> wrote:
> In article <slrnneqcbb.19l.mausg@Smaus.org>, mausg@mail.com says...
>> 
>> On 2016-03-19, JimP <blue@cwahi.net> wrote:
>> > On Fri, 18 Mar 2016 17:47:06 -0700, Peter Flass
>> ><peter_flass@yahoo.com> wrote:
>> >
>> >><mausg@mail.com> wrote:
>> >>>> 
>> >>> 
>> >>> I am told that couples that work in GCHQ or with the NSA (really, same
>> >>> place) aare forbidden to talk of their work, even at home
>> >>> 
>> >>> 
>> >>
>> >>It would be pretty easy for the Jennings to bug their home, or today pick
>> >>up their conversation with a parabolic mike.
>> >
>> > Decades ago when I was reading the Peopular Electronics mag, they
>> > mentikoned that an infrared laser aimed at a window could be used to
>> > hear a conversation in a building. It used the window as a microphone.
>> 
>> I have read that the radiation used is both bad for the people inside
>> th window, and the ones using the equipment.
>> Also, that most sensative windows haave long been treated for it.
>> (triple glazed?)
>


> How is a low powered IR laser "bad" for anyone?  Are you one of these 
> people who hears the word "radiation" and immediately assumes neutron 
> bombardment?

Low powered IR laser would be OK, but X-ray?

>
> And there isn't any "treatment" that prevents a window from vibrating.  
> If you can stand outside the window and hear the conversation then it 
> can be picked up by measuring the vibration of the window.

Triple glazed?

>
> Incidentally, red or green or blue laser works fine for this, however 
> they produce a visible beam.
>  


-- 
greymaus
 .
  .
...

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enigma mausg@mail.com - 2016-03-17 13:46 +0000
  Re: enigma Stephen Wolstenholme <steve@easynn.com> - 2016-03-17 14:07 +0000
    Re: enigma philo <philo@privacy.net> - 2016-03-17 10:00 -0500
    Re: enigma mausg@mail.com - 2016-03-17 15:29 +0000
    Re: enigma Bob Eager <news0006@eager.cx> - 2016-03-17 22:23 +0000
      Re: enigma Jon Elson <elson@pico-systems.com> - 2016-03-17 21:12 -0500
      Re: enigma mausg@mail.com - 2016-03-18 12:39 +0000
        Re: enigma scott@slp53.sl.home (Scott Lurndal) - 2016-03-18 13:15 +0000
          Re: enigma Huge <Huge@nowhere.much.invalid> - 2016-03-18 13:30 +0000
            Re: enigma Ahem A Rivet's Shot <steveo@eircom.net> - 2016-03-18 15:39 +0000
        Re: enigma Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2016-03-18 08:26 -0600
          Re: enigma Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2016-03-18 18:26 +0000
          Re: enigma "Joe Morris" <j.c.morris@verizon.net> - 2016-03-18 19:00 -0400
            Re: enigma Anne & Lynn Wheeler <lynn@garlic.com> - 2016-03-18 17:19 -0700
              Re: enigma Anne & Lynn Wheeler <lynn@garlic.com> - 2016-03-18 17:27 -0700
            Re: enigma Peter Flass <peter_flass@yahoo.com> - 2016-03-18 17:47 -0700
              Re: enigma JimP. <blue@cwahi.net> - 2016-03-18 20:04 -0500
                Re: enigma Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2016-03-18 21:28 -0600
            Re: enigma hancock4@bbs.cpcn.com - 2016-03-19 11:14 -0700
              Re: enigma Stephen Wolstenholme <steve@easynn.com> - 2016-03-20 09:02 +0000
        Re: enigma Peter Flass <peter_flass@yahoo.com> - 2016-03-18 17:47 -0700
          Re: enigma JimP. <blue@cwahi.net> - 2016-03-18 20:06 -0500
            Re: enigma mausg@mail.com - 2016-03-19 11:01 +0000
              Re: enigma "J. Clarke" <j.clarke.873638@gmail.com> - 2016-03-19 10:06 -0400
                Re: enigma Morten Reistad <first@last.name.invalid> - 2016-03-19 16:17 +0100
                Re: enigma greymaus <mausg@mail.com> - 2016-03-19 17:45 +0000
                Re: enigma "J. Clarke" <j.clarke.873638@gmail.com> - 2016-03-19 14:00 -0400
                Re: enigma sidd@situ.com (sidd) - 2016-03-19 15:48 -0400
              Re: enigma Ahem A Rivet's Shot <steveo@eircom.net> - 2016-03-19 15:10 +0000
              Re: enigma Dave Garland <dave.garland@wizinfo.com> - 2016-03-19 12:31 -0500
            Re: enigma Peter Flass <peter_flass@yahoo.com> - 2016-03-19 07:28 -0700
            Re: enigma cb@elaine.df.lth.se (Christian Brunschen) - 2016-03-19 18:05 +0000
              Re: enigma Jon Elson <jmelson@wustl.edu> - 2016-03-21 13:56 -0500
                Re: enigma Andy Burns <feb2017-usenet@adslpipe.co.uk> - 2016-03-21 19:47 +0000
  Re: enigma "capek@ieee.org <Peter Capek>" <peter.capek@gmail.com> - 2016-03-20 23:16 -0700
    Re: enigma Quadibloc <jsavard@ecn.ab.ca> - 2016-03-21 05:55 -0700
      Re: enigma JimP. <blue@cwahi.net> - 2016-03-21 12:07 -0500
        Re: enigma Peter Flass <peter_flass@yahoo.com> - 2016-03-21 13:51 -0700

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