About Ears and Eyes

Contents

The Ears and Eyes project is a searchable database of cases of physical surveillance devices (microphones, cameras, location trackers…) hidden by law enforcement and intelligence agencies to surveil people or groups engaged in subversive activities. Our goal is to help the potential targets of such surveillance practices to better understand and resist them.

Contents

Overview

This section provides a brief overview of the surveillance devices included in the database. It is intended to answer common questions a reader may have about such devices.

When are they installed?

Microphones found inside a power outlet in a building in Bologna, Italy, in January 2018.

Hidden physical surveillance devices are typically used by law enforcement and intelligence agencies to obtain information about a target when traditional surveillance methods are insufficient. For example, if a suspect never talks about sensitive topics on the phone — making the monitoring of their phone useless — law enforcement may resort to installing a hidden microphone in the suspect's home, in the hope of capturing interesting conversations. In many countries, the installation of such devices is regulated by law and must be approved by a judge.

Devices are often installed for long-term surveillance, and may remain in place for weeks, months, or years before being removed or, in some cases, discovered by the people under surveillance. They can also be installed for short-term surveillance of specific events.

Where are they hidden?

Microphones and a GPS tracker found in the fuse box of a car in Lecce, Italy, in December 2017.

In buildings

Microphones and cameras can be installed in buildings to surveil what goes on inside. Such devices have been found:

Microphones and cameras can also be installed in buildings close to the actual place under surveillance. Typically, they are installed behind windows so that they can monitor the place under surveillance, its main entrance, or the way leading to it.

In vehicles

Microphones and location trackers can be installed in all types of vehicles: cars, trucks, motorcycles, bicycles, etc. Such devices have been found:

Other

Microphones and cameras can also be installed outdoors. Such devices have been found:

How do they work?

A device equipped with a SIM card found in a vehicle in Italy, in August 2019.

Power supply

Devices require a power supply, which can be either a battery or the electrical system of the building or vehicle in which the device is installed, or both. In rare cases, they may be powered by Power over Ethernet (PoE).

To save battery power and make it harder to detect them, the devices may not be powered on all the time. Some microphones can turn on only when there is sound. Some cameras can use an infrared sensor to turn on only when there is motion. Some location trackers installed on vehicles can turn on only when the vehicle is turned on, or only when it is moving by using a motion sensor.

Data collection

Different devices can collect different kinds of data:

Data storage

There are two cases:

Data retrieval

Data collected by a device must be retrieved by the spies at some point. There are several techniques:

If a device has internal storage, the spies can retrieve its data by physically accessing it.

How to find them?

A dismantled electrical outlet in which a microphone was found, in Lecco, Italy, in October 2010.

First, devices can be found by manually searching for them in the location, vehicle, or outdoor environment suspected to contain hidden surveillance devices. If devices are suspected to have been recently installed, it can be helpful to look for things that are out of place, such as objects or furniture that may have been moved when the devices were installed. It can be helpful to have the right tools, for example to dismantle electrical outlets in a building or to dismantle the interior of a vehicle. If a device is found, it is important not to stop there: there may be others!

Detection devices can be purchased at specialty stores or on the Internet. Such devices include:

Professional equipment — spectrum analyzers, non-linear junction detectors, thermal imaging systems — can be more effective, but is very expensive and complex to use. It is also possible to pay a specialized company to search for hidden devices, but this is also very expensive, and such companies sometimes have strong ties to local authorities.

Methodology

To be included in the database, a case must meet the following conditions:

For each case, the following information is provided where possible: