The TapTrap is the newest device in our arsenal of counter-surveillance measures. While there is currently no way to determine if there is a phone tap further up the line or from the phone company, Using the Tap Trap, you can check your phone line for on-premises series and parallel bugs and wiretaps. You can also check your telephone for the most common types of hook switch bypasses.
A hook switch bypass is a modification to the telephone instrument so that the carbon microphone (transmitter) or dynamic earphone (receiver) will pick up room sounds and pass them down the phone line to a listening post, even with the phone hung up. This effectively turns the telephone into a room monitor.
Tap Trap detects series devices with a resistance of 61 ohms or more. (Most series taps have a resistance of over 100 ohms.) It also detects parallel devices with a resistance of 65 megaohms or less. (Most parallel taps are under 30 meg-ohms.) It can also detect certain capacitively coupled taps.
It weighs 7 oz. and is furnished in a high impact case that measures 4.25" x 3.25" x 1.5". The unit comes complete with all the necessary plugs, cords, and adapters, as well as a battery and an informative, illustrated instruction manual, so you can start looking for taps immediately.
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