Those who work in the surveillance field, such as law enforcement officers and private investigators, know that during an environmental eavesdropping operation, the amount of time occupied by background noises and useless sounds far exceeds that of conversations actually useful to the investigation.
For example, when planting a bugging device in an office, it may happen that the person under surveillance is not talking to anyone for long hours, and the eavesdropping operation would return only background noise, such as typing on a computer keyboard.
This kind of sounds make the process of listening to the information collected a long and tedious job, and especially if the bug is battery powered, it could run out of juice without giving real results. Therefore, care should be taken to optimize the operation of surveillance devices, using a tool such as a voice-activated bug.
This kind of bug, thanks to its activation sensor, can start working only when the sensor detects a sound above a certain threshold, thus avoiding to record and transmit background noise instead of real intelligence.
It is a GSM bug, with a SIM card just like that of an ordinary phone, which is used to transmit sounds and voices to a preset phone number, at any distance, even on the other side of the world!
The programming of its features (sensitivity, activation alert and so on) can be conveniently done via SMS, thus ensuring absolute safety. By connecting the GSM bug to the landline phone cables, you can easily listen to all incoming and outgoing calls, automatically starting to listen when the handset is released.
For more information and details about how GSM bugs are working, you can visit the Endoacustica website and contact our professional staff.