With the introduction of the digital medium, an abundance of content previously obtainable through other media became available in digital form. Digital delivery implied the necessity for some kind of content modification dictated by the specific characteristics of the digital medium. The situation is further complicated by the convergence of…

Rapid proliferation of different types of interaction devices that use more natural channels (voice, touch, gesture) for interfacing with the digital medium illustrates the trend towards the creation of more "humane" interaction mechanisms. However, the current historical paradox is that modern technological advances are dramatically…

Only a decade ago eye- and gaze-tracking technologies using cumbersome and expensive equipment were confined to university research labs. However, rapid technological advancements (increased processor speed, advanced digital video processing) and mass production have both lowered the cost and dramatically increased the efficacy of eye- and…