A navigation system is provided to direct control of a user interface work-flow during a procedure. Such a need can arise in sterile environments were touchless interaction is preferable over physical contact. The system includes a wand and receiver for controlling a pagination and parameter entry of the work-flow, a processor to compare wand movement profiles, a clock for limiting a time window between the comparison, and a controller for activating a user interface control in the workflow when a wand movement profile or gesture is recognized. The comparison can be based on the wands direction, orientation and movement to and from various locations. Other embodiments are disclosed.
