mobile

Wasup :)
So I got my S6 32gb this friday around lunchtime, and god damn am I happy or what? An amazing phone in every single specc and feature (except from the lack of swapable battery and option to mount more storage if needed). Though there was 1 thing of many that was stuck in my mind; does the S6 have the potential of supporting off screen gestures like the HTC One-phones, 1+1, Oppo and others? Or does this has to do with the chipset (Qualcomm) that's inside the phone? I know there is a trick-app that does this and it's called Knockr, but the main difference is that Knockr leaves the display on with a black screen, while the "real off screen gestures" works when the screen is actually "powered off".
So does this work with the S6, or is it just with new Qualcomm-based phones this works on? And if it works, how do I enable it?

Thanks in advance for answers, especially rich and clear answers! :)