This is an early demonstration of course, though Fujitsu has already enumerated several applications for this technology, from assisting disabled users to simply eliminating the need to look down at the mouse and keyboard.

ENGADGET: Fujitsu eye-tracking tech uses built-in motion sensor, infrared LED for hands-free computing (video)

Real estate agents have used it to show off properties - potential buyers sitting at home in front of a computer screen can use the mouse to look at every corner of a room or to see what the view is like over the balcony.

BBC: How tiny cameras have become big business

He said the aim now would be to look at adult stem cells to see if they could be genetically altered to behave like the mouse retinal cells.

BBC: NEWS | Health | Cell transplants 'restore sight'

Additionally, sites like Wired.com, PerezHilton, Technorati, and the HuffingtonPost use Javascript to look at what visitors do on their pages, including where they click, where their mouse moves, and what text they copy and paste, a practice not mentioned by Wired, for one, in its privacy policy.

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