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From: uusgta@sw1e.UUCP
Newsgroups: sci.electronics,sci.physics
Subject: Laser eavesdropping
Message-ID: <499@sw1e.UUCP>
Date: Sun, 22-Mar-87 20:49:52 EST
Article-I.D.: sw1e.499
Posted: Sun Mar 22 20:49:52 1987
Date-Received: Fri, 27-Mar-87 05:39:47 EST
Organization: Southwestern Bell Telco GHQ St. Louis, MO
Lines: 10
Keywords: modulation
Xref: utgpu sci.electronics:413 sci.physics:961

I was thinking about the commonly mentioned electronic snooping technique
of pasting a reflective dot to a window and listening to conversations in the
room by bouncing a laser off this vibrating mirror.  How *could* such a signal
be encoded? Short bursts of light and time based sampling?  Backscattered
signal strength measurements of some sort?  Doppler shifts?  Anyone know
or got suggestions?
-- 
#			---Tom Adams---
# {bellcore,ihnp4}!sw1e!uusgta	St. Louis MO	314-235-4237
# Opinions expressed here are mine, not those of Southwestern Bell Telephone