1. A method for triggering input commands of a program run on a computing system, comprising: monitoring a field of view in front of a capture device; identifying an input object within the field of view, the input object being held in a human hand and analyzed for changes in shape; detecting a change in the shape of the input object held in the human hand; and triggering an input command at the program run on the computing system, the triggering being a result of the detected change in shape of the input object, the change in shape being physical of the input object.