Adapt a kivy app to use hand recognition with leap motion

I would like to take a simple app that I already have that uses kinect for hand gesture recognition, written with the framework kivy, and adapt it to use leap motion instead. The goal of the app is selecting different rectangles that continuously appear on the screen by using the hand (instead of the mouse for example). And I would like this app use the leap motion sensor bar instead of kinect for this recognition.