Charles Schuler
Guest
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 Posted:
Wed Feb 16, 2005 4:16 am Post subject:
Re: Surveillance and Bugging Question |
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"Josh" <Hans2234@hotmail.com> wrote in message
news:1108490962.111113.281460@f14g2000cwb.googlegroups.com...
| Quote: | Are there any microphones, i.e. bugs that can pick up someone's
subvocalizations, bodily sounds, etc., WITHOUT being attached to that
specific person? Or is it impossible? Thanks for any replies.
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There are ways to focus sound waves. Parabolic reflectors work well and so
do shotgun microphones. It is amazing how sensitive and focused these
devices can be.
Also, there are ways to use window panes as transducers by bouncing
microwave beams or laser beams off of them and using Doppler shift recovery
to get acoustic information that originated on the other side of the window
pane.
Also, there are techniques that only the CIA and NSA know about! |
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