“…Real-Time Eye Tracking: Pupil Size, Contingent, Gaze-Control, and Gaze-Aware Gaze location can be used to modify a display or physical device in real-time, depending on either pupil size or on the location of gaze itself, with both summarized in the following five parts: (1) Augmented cognition, (2) Contingency, (3) Gaze-control, (4) Gaze-aware systems, and (5) The DARPA augmented cognition initiative has considered the use of gaze tracking as a potentially important for assisting users in military scenarios (Crosby et al, 2003;Marshall and Raley, 2004;Nicholson et al, 2005;Fuchs et al, 2007a;Stanney et al, 2009). The majority of these studies used pupil dilation as a measure of cognitive load (Marshall, 2002;Marshall et al, 2003;St John et al, 2003;Taylor et al, 2003;Raley et al, 2004;St. John et al, 2004;Johnson et al, 2005;Mathan et al, 2005;Russo et al, 2005;Ververs et al, 2005;De Greef et al, 2007;Coyne et al, 2009), while only few attempted to actually develop the technical infrastructure for real-time assistance via gaze location (Barber et al, 2008), though none produced results using gaze location.…”