What are air gestures?

1:102:03Samsung Galaxy S 4 Air View & Air Gesture demo – YouTubeYouTubeStart of suggested clipEnd of suggested clipOn Android devices you can customize the home screens. So instead of back in the day used to holdMoreOn Android devices you can customize the home screens. So instead of back in the day used to hold the button let me hold the icon you wanted to move around and go to the screens.