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Go ahead, wake up your smartphone. No, don’t touch it! Just look at it. Wait for a second…and…yes! It recognizes you. You don’t even need to key in a pass code. Your phone identifies the unique way your eyes flicker. See? What app do you want to open? News? Okay, stare at the icon. Want to scroll through an article? Look down. Pause a video? Look away.

The day when eye tracking becomes a common feature in mobile gadgets may not be far off. The technology got a lot of buzz this March when Samsung demonstrated finger-free scrolling and video control on its flagship phone, the Galaxy S4, during the product’s launch in New York City. The same week, LG Electronics announced it would include similar capabilitiesin its newest smartphone, the Optimus G Pro.
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