With $21 million in funding from Intel, several prototypes, and lots of testing, the Tobii Rex is a stick-like device that once attached to your computer is no larger than the size of a pen, can let you control it using just your eyes. It connects via USB and works via the Gaze UI. That software lets users navigate, zoom, select and scroll using their eyes alone — in Windows 8, it proves to be a recipe for success. The initial consumer unit run will be just about 5,000 units before the end of 2013, but alongside that is a developer edition that comes with a laptop (seen above) costs $1,000. No word yet on the price of the consumer edition, but hopefully we’ll all know about it soon.