input device. First attempts are already using gaze fixations in handicapped applications, but mostly in standard graphical environments not designed for eye control. Especially new mobile computing devices (i.e. wearable PCs and PICs) require more efficient and if possible hands-free input devices such as voice control. Eye movements could add a new dimension to the interaction if integrated as a further multiniodal input device. However, the graphical interface needs to be designed for this purpose and automatic interpretation of eye movements to differentiate its multiple functions, such as scanning an image, gaze stabilization, reading, pointing, clicking and other desires needs to be provided. The,latter becomes of further importance since eye tracking technology is becoming available at high precision, low weight and low cost and therefore viable to be integrated as an additional input device for professional and consumer applications in binocular head mounted displays or monocular head-up micro displays.
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