The system uses existing hardware along with a new box called Mars that processes all the signals. It also includes a pair of Vive Trackers (3.0) to track camera, light or prop movement, three Rovers to send the signal from a Vive Tracker to Mars and a pair of Base Stations (2) that determine the exact location of each Vive Tracker and Rover module.
Setting up such systems can be complicated, but HTC Vive promises features like automatic calibration for camera offset and lens distortion. It also has plug and play compatibility, letting you sync Unreal Engine's LiveLink system "with no additional software required."