The Samsung Galaxy S III does some cool tricks. Smart Stay, for instance, is a face-detection feature that keeps the display lit as long as you're looking at it. But as is often the case with cutting-edge tech, it's far from perfect. According to one rumor, the S IV may offer better facial recognition. Dutch language tech blog SamsungGalaxyS4.nl, citing the usual anonymous sources, claims the S IV will include two eye-detection features, Eye Pause and Eye Scroll, but lacks details on the alleged tools' benefits. While this rumor may seem specious, the S IV may very well feature eye-tracking capabilities that improve upon those of its predecessor.