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This paper introduces a system that enables a presenter to work directly on the projected screen without interrupting the presentation flow by mouse or keyboard use. One uses his fingers as a natural pointing device. The system consists basically of an LED and a webcam as well as a small software system that runs on the presenter's notebook. The camera observes the LED position and the software converts it into mouse events.doi:10.1145/1290144.1290165 dblp:conf/mm/JantzFKR07 fatcat:rit4na2jk5cmxoh6jqwisdj6ue