Senseye, interesting Android apps to control by eyes

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I have read that there is a senseye technology coming up shortly. Senseye enabled the cell phones to be controlled only by glances and eye gaze.Senseye combine cameras and infrared LEDs to track eye movements. It can be reliable to dim the display when the phone look at the screen or automatically move the screen (scroll) while reading a long text. Moreover, Senseye can be used as a password to unlock the phone. In addition to control mobile phones, Senseye can be used as a tool for advertisers. Through this tool, they can find out if their ads seen by users. So far, Senseye technology running on the Android operating system. Not to mention what will be available also in other devices.What do you think about this technology? Do you think we need this kind of technology now?Are you interested to buy one of them?