i know that official argument of IPI soft is "resolution of camera ( i guess the kinect) is not too high for finger tracking". But you can search many of solutions for it. For example this site:
http://hacknmod.com/hack/kinect-finger- ... e-control/explains and shows finger tracking without special resolution of camera, but work fine with deph of field/ kinect. Although it is not 100% but better than nothing.
IPI soft could fix it! :)
I dont know much about motion capture but this is the cheapest and for price the best solution for motion capture, and with full body capture (head, hand, fingers) many, many of people buy this soft! Maybe way is new kinect? Maybe this problem in IPI soft will never fix and you must this little pieces of motion capture make manually. :)