Magnetic contact lenses
By slapping magnetic contact lensesonto your eyeballs, sensors can track where you're looking. This couldhave important applications for the disabled, especially for those whorely on their eyes for control instead of disabled body parts.
Previousmethods often employed visual solutions such as cameras, which can getmucked up by rapid motions, light, or glasses. They hope to use thetechnology to better track the attention of combat personnel such as pilots, whose eyes help them interact with their heads-up displays.
Source: newscientist.comAdded: 19 July 2007