The first gesture could be useful, but it didn't really work
so well. By waving your hand across the screen, the phone will take a
screenshot. Interestingly, although this gesture didn't work the first couple
times, it did make the screen slide, so there could very well be touch-free
gestures for navigation available as well. The second gesture shown is by far
the most useful of the bunch. The video shows that if you are scrolling down a
long list of items, like your Twitter feed perhaps, a quick double-tap on the
top edge of the phone will return you to the top of the list. Scrolling on
Android can be pretty fast, but the simple double-tap seems like a great
solution. And, last was a gesture whereby placing your hand over the device
will pause video that you're watching, including video in pop-up mode.
Definitely nice to see Samsung thinking out of the box with
gesture controls.
Source XDA-Developers
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