Currently up to 20 anchors supported but that’s only because for initial testing we statically allocated memory per anchor. One of the last things we need to do for initial release is change that to dynamic allocation, then it will go to over 200 anchors.
Our big down side is that we only support one tag at a time unless they are far enough apart to not see each other. We can time slice between multiple tags and interpolate the range data to fill in the gaps without significant performance hit but any more than two tags and we currently need to increase system latency (currently 60 ms) and we still lose position accuracy if you’re moving much (our target market is automotive test so we need to track 1-2 g accelerations).
On the drawing board is an idea that I’ve prototyped and which seems to work which will more than triple our range measurement rate. That would allow us to use smaller time slices and so support more tags at once. But that’s long term plans, we need to get the current system out the door first.