New wearable pointing devices. (a) Components of a WearTrack equipped wearable computer. (b) Desktop of a personal computer showing the processed camera output of the Graylevel VisualGlove. A user’s index (red) and thumb (green) fingertip positions, which control the cursor’s motion, are highlighted in color while detected by the system. (c) The Gyration Ultra GT cordless optical mouse. (a)–(c) from [17, 18, 28], respectively.
