XSp.

A technology for cellphones that tracks the user’s eye to simulate a 3D environment on the cellphone’s screen:

Similar to Johnny Lee’s ideas using the Wiimote, which you can see in his TED Talks presentation (post in portuguese, but the video is subtitled) or on the WiiMote post, only this concept doesn’t use a WiiMote or any other devide to track the user’s position.
Seems to use the front cellphone cam with an image recognition software instead, though I’m not shure if the video is a concept, or an actual functioning product/prototype.

Source: Gizmodo