the ppt systems offer an option for combining optical heading with the InertiaCube orientation tracking. this is a good solution if you have magnetic fields in your room.
the optical heading plugin simply requires two markers in a fixed distance to be placed on the intertiacube. it works reliably in rooms even with strong magnetic interference.
this plugin comes with the PPT system at no extra cost. we can also provide an 'optical heading' marker for this if needed. contact
sales@worldviz.com if you need details about this or want to get in touch with other customers who are using this solution.