A method for tracking an intent comprises, for an intent parameter, searching a Structure Access Intent Tracker database for at least one record pertaining to the intent parameter, each record identifying an intent. The sample volume is a substantially oblong shape, and the magnetic field generating elements run substantially parallel to the major axis of the shape, while the capacitor elements run perpendicular to the major axis. In a first configuration, the visor is positioned away from a user’s face to accommodate spectacles or goggles.