I've uploaded a Sense mashup that demonstrates how you can use hand and arm gestures to interact with a Sense visualization. This example uses the Myo armband with the Leap Motion Controller to both navigate through an app as well as make custom selection all through a gestural user interface. The code and documentation are all on Qlik Branch here. The code is open source and thus free to use and extend - i just ask that you give me original author credit and share with us how you use it. I'm happy to help answer questions or comments (ideally posted to Branch since that's where I visit most often).