Samsung's purported Galaxy S4 is going to be quite a stellar smartphone if the rumors are anything to go by - rumors have it that the Galaxy S4 will pack in wireless charging, an Exynos 5 Octa-core processor, a high-resolution display that will imbibe diamond-shaped pixels, and even a stylus. However, if you thought these features would pack a punch, think again. Per latest rumors, Samsung has more up its sleeve and will also allegedly incorporate eye tracking technology in the Galaxy S4.

Per reports, Samsung has filed a new trademark which suggests that the Korean company is working on the new "Eye Pause" and "Eye Scroll" features, which are basically eye tracking technologies.

The news comes courtesy of SamsungGalaxyS4.en, who got a tip from someone in the know.

"I got a tip from someone who knows these things that Samsung has to capture two concepts that may be associated with new features that we will soon in the Galaxy S4 will encounter. The names - Eye and Eye Pause Scroll - speak nicely to the imagination, and fit perfectly for me in the street that Samsung last year struck with features like Smart and Stay Smart Rotate," noted Marvin of SamsungGalaxyS4.en.

It is not yet known what exactly these features are capable of doing but presumably, the phone's front camera would detect if your eyes are on the screen or away from it and function accordingly.

Possibly, the Eye Pause feature will be able to pause a video automatically when the user glances away from the screen.  The Eye Scroll feature, on the other hand, would be able to figure out when the text on the page needs to be scrolled up or down, or maybe even sideways.

In 2012, Samsung brought a slew of new features with its Galaxy S3, including Smart Stay. This feature allows the front-facing camera to detect if a user's eyes are open or closed and prevents the screen from switching/fading off if the eyes are open. Samsung already has a base ready thanks to Smart Stay and, therefore, the idea of the new eye-tracking technology does not seem implausible.

The million-dollar question is when would this technology make its way to smartphones? Considering Samsung announces a new version of its Touch-Wiz UI every year, it is likely that the Eye Pause and Eye Scroll features would be part of the new UI.

With touchscreens becoming an integral part of our lives, it is only a matter of time before eye-tracking technology too follows suit. A strong possibility exists that Samsung may incorporate the Galaxy S4 and Galaxy Note 3 with this new technology.

What do you think of the upcoming technology? Would you use it?