How can I track a object with two vive tracker?

[jackieyang]

I would like to track an object in VR for research purposes. However, with only one tracker, the object could often occlude the tracker in a certain orientation and result in object appears in a different location than it actually is. I'm considering using two Vive Tracker to improve its tracking quality, but I cannot find any API so that I can know whether one of the trackers is occluded by the object. Any suggestions?

 

Thanks!