PPI security conducts sweeps to detect devices and sweeps to cloak surveillance devices currently installed by adversaries.

- Conference Monitoring
Rooms are swept to check for surveillance equipment before meetings and also during meetings so that unauthorized transmitters or cameras can be detected.
- Carrier Current Devices
Special receivers are used to detect bugging devices using power lines to transmit information.
- Acoustic Noise Generators
This is a white noise generator, projecting into the room to defeat hidden microphones.