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Eavesdropping Possibilities & Surveillance Technology

Types of Eavesdropping Technology
New methods of “listening and watching” with the help of modern technologies are widespread in our time. For example, a tiny GSM transmitter can be purchased from practically any online spy shop for just 100-200 francs, and it can easily intercept all your conversations at the office or at home. Perhaps even more concerning is the Bluetooth protocol. It was specifically designed for high-quality voice transmission over distances of up to 100m and can be easily used for eavesdropping.

Eavesdropping and Surveillance Technology Using Illegal Transmitters
Hidden, compact, handcrafted, or produced in small quantities, these devices include microphones or video cameras implanted in other electronic devices, connected to telephone lines, integrated into AC wiring, or powered by their own power source, equipped with an antenna and/or SIM card.

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Reliably Detecting Illegal Transmitters
The only reliable way to detect wireless protocols is by using pre-selector chips (SAW filters) that suppress all other signals except the desired ones. This is the method implemented at FocusControl, allowing 6 channels to scan different frequency ranges simultaneously and detect 6 different types of transmissions over much greater distances than common RF detectors. These capabilities make it a very desirable and reliable counter-surveillance tool.

The sensitivity of common RF detectors (bug detectors) is spread over a wide frequency range, typically 3 or even 6-7 GHz. This means that standard detectors cannot recognize weak and non-continuous signals like Bluetooth, Wi-Fi, or Wi-Max. More powerful signals like GSM-1800 are also difficult to detect due to low sensitivity in higher frequency ranges.

It is recommended that all sources of RF waves in the premises are identified during a search. It is necessary to determine the type of each source—whether it is a regular transmitter like a Wi-Fi access point or has an unclear origin and should therefore be inspected and potentially removed.

Below are the most common possibilities for eavesdropping using wireless protocols:

GSM – WCDMA – 3G – LTE

GSM Baby Monitor/GSM Alarm/GSM Bug

A small box with SIM card support. It can transmit acoustics or conversations from a landline phone via the GSM network to a preprogrammed number. It can be controlled via SMS or from a PC. It is powered by a mains supply and features a rechargeable backup battery.

GSM/GPRS/EDGE/3G/4G-LTE Video Camera

Equipped with a built-in video camera, it can transmit captured images, videos, and acoustics. Typically used for security observation, it can also be used for illegal eavesdropping. The GSM network allows images to be transmitted via GPRS/EDGE, while 3G/4G/LTE enables real-time video streaming.

Spy Phone

A mobile phone converted into a “spy phone” with specially installed software. This software allows the illegal listener to activate the phone’s microphone and transmit acoustics to a preprogrammed number. The device is controlled similarly via SMS or from a PC.

GPS Tracker

A small device installed in a target’s car or hidden among their personal belongings for tracking purposes. It determines its coordinates via a built-in GPS receiver and transmits them using the GSM/3G/4G network or records a trail in its internal memory. Most of these devices also feature a built-in microphone, allowing the operator to listen in addition to tracking coordinates.

GSM Bug

GSM Baby Monitor/GSM Alarm/GSM Bug

A small box with SIM card support. It can transmit acoustics or conversations from a landline phone via the GSM network to a preprogrammed number. It can be controlled via SMS or from a PC. It is powered by a mains supply and features a rechargeable backup battery.

Video Camera

GSM/GPRS/EDGE/3G/4G-LTE Video Camera

Equipped with a built-in video camera, it can transmit captured images, videos, and acoustics. Typically used for security observation, it can also be used for illegal eavesdropping. The GSM network allows images to be transmitted via GPRS/EDGE, while 3G/4G/LTE enables real-time video streaming.

Spy Phone

Spy Phone

A mobile phone converted into a “spy phone” with specially installed software. This software allows the illegal listener to activate the phone’s microphone and transmit acoustics to a preprogrammed number. The device is controlled similarly via SMS or from a PC.

GPS Tracker

GPS Tracker

A small device installed in a target’s car or hidden among their personal belongings for tracking purposes. It determines its coordinates via a built-in GPS receiver and transmits them using the GSM/3G/4G network or records a trail in its internal memory. Most of these devices also feature a built-in microphone, allowing the operator to listen in addition to tracking coordinates.

Bluetooth

Bluetooth Eavesdropping Device

A small device whose size is limited only by the desired power source. With an external power source, these devices can be as small as 1x1x0.5cm. They are challenging to detect due to:

1. Low power, non-continuous transmissions in relatively high frequency ranges;
2. The ability for remote deactivation thanks to Bluetooth’s duplex capability;
3. The option to collect information and transmit it via remote query at night, meaning no radio waves are sent during working hours;
4. Their small size.

Spy Phone Bluetooth

Similar to GSM, surrounding acoustics can be captured and transmitted via Bluetooth if the phone has preinstalled “spy” software.

Spy Smartphone

A smartphone with preinstalled “spy” software enables the eavesdropper to listen to the surrounding acoustics in real-time or initiate downloading of pre-recorded data.

Eavesdropping Device

Bluetooth Eavesdropping Device

A small device whose size is limited only by the desired power source. With an external power source, these devices can be as small as 1x1x0.5cm. They are challenging to detect due to:

1. Low power, non-continuous transmissions in relatively high frequency ranges;
2. The ability for remote deactivation thanks to Bluetooth’s duplex capability;
3. The option to collect information and transmit it via remote query at night, meaning no radio waves are sent during working hours;
4. Their small size.

Spy Phone

Spy Phone Bluetooth

Similar to GSM, surrounding acoustics can be captured and transmitted via Bluetooth if the phone has preinstalled “spy” software.

Spy Smartphone

Spy Smartphone

A smartphone with preinstalled “spy” software enables the eavesdropper to listen to the surrounding acoustics in real-time or initiate downloading of pre-recorded data.

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Wi-Fi – Wi-Max

Wi-Fi Eavesdropping Device

Can transmit acoustics or high-quality video via the standard wireless network. The information can then be easily relayed to the internet for monitoring from anywhere in the world. The device can also be controlled remotely via the internet.

Wi-Max Eavesdropping Device

In addition to the capabilities of Wi-Fi, Wi-Max provides direct internet access and extended coverage distance. This offers nearly unlimited surveillance and control options, including transmitting acoustics, real-time video, remote operation, information collection with fast transmission times, and more.

Telephone Eavesdropping Devices

When discussing telephone lines, GSM/3G/LTE (4G) eavesdropping devices should be mentioned. These can record conversations from a standard landline phone and then transmit them via GSM/3G/LTE (4G). A Wi-Fi/Wi-Max or Bluetooth channel can also be used for transmitting this information.

Our detectors are specially designed to identify all types of telephone eavesdropping devices mentioned above.

Telephone eavesdropping devices can be installed anywhere along a phone line. They can be within the telephone set, the phone socket, the connection box, or the cable. Most of these devices are only activated when the receiver is not functioning. Therefore, telephone line inspections should only be conducted when the receiver is in this state.

Wi-Fi Eavesdropping Device

Wi-Fi Eavesdropping Device

Can transmit acoustics or high-quality video via the standard wireless network. The information can then be easily relayed to the internet for monitoring from anywhere in the world. The device can also be controlled remotely via the internet.

Wi-Max Eavesdropping Device

Wi-Max Eavesdropping Device

In addition to the capabilities of Wi-Fi, Wi-Max provides direct internet access and extended coverage distance. This offers nearly unlimited surveillance and control options, including transmitting acoustics, real-time video, remote operation, information collection with fast transmission times, and more.

Telephone Eavesdropping Devices

Telephone Eavesdropping Devices

When discussing telephone lines, GSM/3G/LTE (4G) eavesdropping devices should be mentioned. These can record conversations from a standard landline phone and then transmit them via GSM/3G/LTE (4G). A Wi-Fi/Wi-Max or Bluetooth channel can also be used for transmitting this information.

Our detectors are specially designed to identify all types of telephone eavesdropping devices mentioned above.

Telephone eavesdropping devices can be installed anywhere along a phone line. They can be within the telephone set, the phone socket, the connection box, or the cable. Most of these devices are only activated when the receiver is not functioning. Therefore, telephone line inspections should only be conducted when the receiver is in this state.

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FocusControl
Counter-Surveillance, Bug Sweeps, and Eavesdropping Specialists in Switzerland and Europe
Consultation – Planning – Execution – Service
Available across Switzerland

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