**Cave Information** Thursday Jan 17, 2019 : software stack - Qs. which projectors used? how is data streamed to projectors? - Qs. How does X3D communicate with motion tracking system (Art or Intersense is900?)? Through VRPN - Qs. How does ART track data? VRPN provides a unified interface to motion trackers or joystick controllers and provides timestamping of data, simultaneous access to multiple peripheral devices, [etc](https://wikivisually.com/wiki/VRPN). - Supported Devices list of VRPN : ART optical tracking systems, including Flystick2(the wand).