The Basics of Phone Bugs
Phone bugs are among the most popular of devices for
surveillance. This is because there is something that humans
enjoy about listening in on conversations and learning things
that others may not want them to learn. For those who aspire to
involve themselves in professional surveillance, and even for
those who just participate in surveillance as a hobby, knowing
the basics of phone bugs is valuable information.
Phone bugs are interesting because they are versatile. There are
different types of these listening devices, and it is even
possible to combine two or more different bugs into one bug that
can act as its own backup device. These hybrid phone bugs are
constructed from one of four different eavesdropping techniques:
radio frequency (RF), ultrasonic, optical, and acoustic. RF
phone bugs are the most popular of covert listening devices.
This is because they are inexpensive and they are difficult to
trace. Even if the bug is discovered, chances are that it will
not be traced to you. Radio waves are transmitted from the bug's
location to a secondary location. They are usually small and can
easily 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 transformed
into a signal too high for human ears to hear. It is transmitted
to another location where it is turned back into an
understandable signal. These bugs are harder to detect than RF
bugs, and do cost a little more money.
The optical bug is the least popular of all the phone bugs. It
is rather expensive and can be difficult to use. What the
optical device does is turn sound (or even data, so it can be
used to bug VoIP phone calls) into pulsating beams of light. The
light is then reconverted into sound in order to be heard by the
eavesdropper.
Finally, the last weapons in the covert listening devices
arsenal are the acoustic phone bugs. These, however, are not
technically bugs. They are merely low-tech options that allow
you 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 more
effectively find out what you should know with phone bugs.
(c) 2005 Copyright www.spyassociates.com. This article is about:
Phone Bugs