Smart Nav 4 adaptive cursor eye tracker

Smart Nav 4 adaptive cursor eye tracker, developed by Natural Point, 2007. This device is an alternative to using a traditional PC mouse or video game controller and allows the user to navigate an on screen cursor using their head movements. The user is required to place a small reflective dot on either their face or a pair of glasses, the device can then read the movement of the dot and mimic it's movements on-screen. This device was used by Paul Seal as a hands-free way to play video games.