>>310878853
>>310878863
There is the Hive tracker, but it's an open source project and have no current drivers I think.
It also looks like it have some latency compared to pucks. Compare the tracker in his hand and whats shown on the computer.
If something like the Hive tracker turns out good. It would really be an cheap alternative to HTC pucks.
You can also design it in different ways, and make it smaller.
Imagine a smaller tracking plate made for being worn on your VRShoes, with replacable batteries or an 1850 cell.