As well as bugs (See separate entry HERE) CHERUB agents are trained in the use of a variety of other surveillance devices.

Telephone taps
These are still used occasionally, but modern criminals tend to assume that their phones are tapped and use mobile phones rather than land lines.

Miniature Video Cameras
A new generation of tiny, high-resolution, devices have made it almost as easy to plant a hidden video camera as a listening device. However, although video cameras provide better evidence than listening devices, they do still have serious disadvantages. They need to be placed carefully, so that they can film what is going on while not being seen and they use more radio bandwidth than listening devices, making their transmissions much easier to detect.

Spyware
Spyware is computer software that tracks what a person is doing on their computer. Some spyware works by recording every key stroke (Ideal for getting passwords), other systems save a picture of what the computer screen is displaying regular intervals, or make copies of every file that is opened. The spyware data can be retrieved manually, or the spy program can be set up to send data over the internet every time the suspect goes online.