Inspiration. Tech companies want to highlight their stories on how their products make events like this possible. Microsoft lives this reality and is uniquely positioned to make it happen. I am so glad that they chose this route, and accelerated it with Satya Nadella at the helm.
Most of this technology that is used in gaming and accessibility ultimately has its roots in the Kinect sensor, essentially gone but not forgotten. Doing backgrounder work on this topic, obvious to me that these sensors allow the software to interpret what is seen and can act upon it, without being called out as such. Down the road as the Virtual Reality market matures, devices like this will be as ubiquitous as smartphones and touch screens are today. Devices such as the Tobii Eye Tracker 4C are an interim step prior to the aforementioned VR.
also posted to my a11y blog @ Tumblr.