Can I use the 3-Space sensors for positional tracking?
Our 3-Space sensors are only capable of accurately tracking rotational movements. Translational tracking (distance, position) would require double integration of the sensor's acceleration reading, which inherently introduces a lot of error. Although we do offer pedestrian tracking as a form of positional tracking with our 3-Space mocap suit, this will only work with humans as it relies on walking motions, and one foot being on the ground at any given time.
If you had some other way of tracking the velocity or position at any given time, it would be possible to use this data in conjunction with our sensor to determine the position by dead reckoning: http://en.wikipedia.org/wiki/Dead_reckoning. However, if you want just one device to track position, you may want to try looking into a GPS or something similar.