With this technology, I see your arms and eyes to work more like Wii remotes. For cell phones and other media gadgets.
So let me depict the scenario. You are sitting in your boxer shorts. You keep your cell phone on the table in front of you. you use your arms, eyes and nose (I added this for fun :-), imagine any other limb of your choice) to play the game. Without touching the phone. Sounds cool.