Bug detectors are highly sophisticated pieces of anti-surveillance equipment. They help security forces to keep sensitive information private by detecting potentially dangerous signals that could indicate the presence of bugging devices. They are often used in conjunction with other pieces of anti-surveillance equipment, like bomb jammers and audio jammers.
Bug detectors work to find signals so they can then be identified. These might be in the form of Bluetooth, wifi, analogue or digital signals that could pose a threat to security. Their main purpose is to warn security forces so that further security measures can be taken. Bug detectors can be used in vehicles and buildings to locate signals. They might be larger, more permanent devices that can be used in more high-risk areas or they might be small and discrete. Pocket detectors and widely used now as they can be carried anywhere for covert or undercover surveillance of an area.