ESPi is a development-stage R&D company fueled by substantial domestic and international IP holdings.  Our technology derives from novel applications and integration of mechanics, electronics and optics, as well as pose estimation algorithms.  We have built a number of proof-of-principle prototypes (alpha units) to showcase several possible beta directions. Below are links to several YouTube videos that illustrate the operation of some of our alpha units.

http://www.youtube.com/watch?v=BDv5U4PIWK0
http://www.youtube.com/watch?v=lRP-i5kY8ac
http://www.youtube.com/watch?v=Tcqu4NNRXQM
http://www.youtube.com/watch?v=8zRVQ-d1hxU