Abstract: A UI (user interface) for gestural control enhances the navigation experience for the user by preventing multiple gestures from being inadvertently invoked at the same time. This problem is overcome by establishing two or more categories of gestures. For instance, the first category of gestures may include gestures that are likely to be invoked before gestures that are included in the second category of gestures. That is, gestures in the second category will typically be invoked after a gesture in the first category has already been invoked. One example of a gesture that falls into the first category may be a gesture that initiates operation of a device, whereas a gesture that falls into the second category may be change in volume. Gestures that fall into the second category require more criteria to be satisfied in order to be invoked than gestures that fall into the first category.