If typing, tapping and clicking makes you feel stifled and limited in your interaction with your computer, then Leap Motion may pique your curiosity. Imagine futuristic technical capabilities that allow a user to move things around a screen and control everything like a conductor in an orchestra; with the skilful movement of their hands. Leap Motion provides a cutting edge motion controller that allows users to control their computers with simple hand and finger movements. Leap Motion's API makes some of this functionality available to be integrated into other applications or to create new ones.
eBay has introduced HeadGaze, a technology that allows users to control an iPhone through head motions. The technology uses Apple's ARKit and resulted in a test app that allows users to swipe through deals on eBay (HeadSwipe). eBay has open sourced the technology and posted on GitHub.