Apple Patents 3D Gesture Control

Fig 7a, is there a device that does this stuff (Detects user's fingers after they leave the touch screen)?

techchrunch article: <a href="http://techcrunch.com/2013/08/20/apple-patents-3d-gesture-control-via-hover-based-input-on-touchscreen-devices-like-the-ipad/" rel="nofollow">http:&#x2F;&#x2F;techcrunch.com&#x2F;2013&#x2F;08&#x2F;20&#x2F;apple-patents-3d-gesture-co...</a>