Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!mit-eddie!uw-beaver!ubc-cs!alberta!dvinci!dueck From: dueck@dvinci.USask.CA (Harvey C. Dueck) Newsgroups: sci.electronics Subject: Re: Electronic sweeping and debugging equiptments Message-ID: <2097@dvinci.USask.CA> Date: 28 Aug 89 19:07:26 GMT References: <1989Aug26.042754.9128@utzoo.uucp> Reply-To: dueck@dvinci.UUCP (Harvey C. Dueck) Organization: University of Saskatchewan, Saskatoon, Canada Lines: 21 In article <1989Aug26.042754.9128@utzoo.uucp> henry@utzoo.uucp (Henry Spencer) writes: >In article yj1@CUNIXA.CC.COLUMBIA.EDU (y) writes: >>Do you know any equiptment that can check whether the phone lines are >>monitored or the rooms are bugged? Do you know any anti-spy techniques >>in general? ...stuff about conversing in a (possibly) bugged room deleted >The more background noise, the better. If the listeners are reasonably sophisticated and can obtain a separate recording of the 'background noise', then it is often a relatively straightforward signal processing task for them to filter it out. This means that recorded music, television and radio broadcasts are effectively useless as background noise unless turned up loud enough to saturate the recording equipment used by the listeners. - harv -- dueck@dvinci.usask.ca or ...!uunet!dvinci.usask.ca!dueck