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The Basics of Phone Bugs
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By Kingston Y. Amadan
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Phone bugs are among the most popular of devices forsurveillance. This is because there is something that humansenjoy about listening in on conversations and learning thingsthat others may not want them to learn. For those who aspire toinvolve themselves in professional surveillance, and even forthose who just participate in surveillance as a hobby, knowingthe basics of phone bugs is valuable information.
Phone bugs are interesting because they are versatile. There aredifferent types of these listening devices, and it is evenpossible to combine two or more different bugs into one bug thatcan act as its own backup device. These hybrid phone bugs areconstructed from one of four different eavesdropping techniques:radio frequency (RF), ultrasonic, optical, and acoustic. RFphone bugs are the most popular of covert listening devices.This is because they are inexpensive and they are difficult totrace. Even if the bug is discovered, chances are that it willnot be traced to you. Radio waves are transmitted from the bug'slocation to a secondary location. They are usually small and caneasily be hidden in a device or very near the phone.
Ultrasonic phone bugs are bugs that read audio pressure waves.The signal from the talking is captured and then transformedinto a signal too high for human ears to hear. It is transmittedto another location where it is turned back into anunderstandable signal. These bugs are harder to detect than RFbugs, and do cost a little more money.
The optical bug is the least popular of all the phone bugs. Itis rather expensive and can be difficult to use. What theoptical device does is turn sound (or even data, so it can beused to bug VoIP phone calls) into pulsating beams of light. Thelight is then reconverted into sound in order to be heard by theeavesdropper.
Finally, the last weapons in the covert listening devicesarsenal are the acoustic phone bugs. These, however, are nottechnically bugs. They are merely low-tech options that allowyou to listen in using things like rubber tubes at construction"soft spots" and open windows.
Know your listening devices, and you will be able to moreeffectively find out what you should know with phone bugs.
(c) 2005 Copyright www.spyassociates.com. This article is about:Phone Bugs
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