> Another missed cue for someone to speak about are LAVD (Laser Aided > Vibration Detectors) which most will NOT find on Google if they searched > that EXACT term.
The folks at Information Unlimited (the ones that advertise in the back of all the Popular Electronics, etc magazines) have been selling a kit to do this for years. They call it a "laser listener". Simple diode laser + optics + receive amplifier. Catches the vibrations of the window due to speech inside the office (and it *does* work). Look here : http://www.amazing1.com/laser-listener.htm You can get a kit that'll do 500' range for $349 or fully assembled for $499. /mike. _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
