Head Pointing SystemsOptical Head Pointing systems are useful for students who are unable to use their hands to control the cursor on the screen or to use the keyboard. For the user to control the movement of the cursor with his head movements, he must be able to 1) watch and follow the pointer, 2) control the movement of his/her head in small increments, and 3) understand basic computer navigation. A small interface box on top of the monitor reads and interprets the head movements as mouse movements. Using this capability with an onscreen keyboard, the system can completely replace a regular keyboard. A student can "click" by activating a single switch or by using dwell selection software. However, a "dwell selection" is available that allows you to leave the pointer on a key for a certain period to automatically select it. Some systems offer full head/mouse movement as well as directional (joystick-like) movement of the pointer. ExamplesHead Master Plus (Prentke Romich Co. ) Head Master 2000 (Prentke Romich Co. )
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| Head Mouse (Origin Instruments Corporation) Tracker 2000 (Madentec) Magic Cursor (Madentec) The Point (Alphalab) NaturalPoint TrackIR (Natural Point)
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