A group of students at the Arizona State University have revisited the scleral search coil to develop a new low-cost Magnetic Eye Tracking Device (METD). The entrepreneurs aim at making this technology available to the public at an affordable $4000 and are primarily targeting disabled. More information is available at ASU News.
If your new to eye tracking it should be noted that the reporter claiming that common video based systems uses infrared lasers is just silly. It's essentially light-sources working in the IR spectrum (similar to the LED in your remote control).
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