Another rumor is confirmed. The front camera of the Samsung Galaxy S4 will follow the movement of your eyes through Smart scroll, which will allow us to move through websites and emails without touching the screen. In addition, this technology, through Smart Pause, it will pause any video we are watching the moment we look away from the device.
More information - Magic integrated into the front camera of the Samsung Galaxy S4
If you wink at him, does he enter Youporn? ...
I'm sure some cooked ROM will allow it in the not too distant future.