1. A method for triggering commands of a program executed on a computing system, comprising method operations of: monitoring a field of view of an image capture device; identifying an interface object within the field of view, the interface object being defined by a pair of spherical objects, the identified interface object being analyzed for change in position; detecting the change in position of the interface object; and triggering an interfacing command at the program executed on the computing system, the triggering being a result of the detected change in the interface object.