For your eyes only [Gadgets Eye Tracking]

WHAT IF YOU COULD pause your TV with a glance? Or scroll through a pdf on your computer just by moving your eyes down the screen? Or even activate controls in your car by briefly staring at them - while keeping your hands on the wheel? Eye tracking has been around for decades, used by researchers studying the physiology and psychology of human vision. But with rapidly falling costs and recent technological advances, the tech is finally moving away from passive analysis and into the area of active interaction. People with disabilities use it to move the cursor on a computer screen, and there are trials to get them to control their prosthetic limbs just by using their gaze. Eye-tracking video gaming is between fixations) could help them better understand the visual system and even spot neurological disorders; as computers became widely available, they could even compute and analyse subtle differences in gaze patterns that are not noticed by humans.