Figure 1: (a) Using BodyLoci, the user selects a command by touching an area on his body; (b) using mid-air Marking menus, the user selects a command by performing a directional gesture in front of him; (c) hardware setup in the virtual reality context; (d) novice modes with background images for both techniques.

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Figure 1: Tactile or visual marks on the touchpad help performing gestures: (Left) Dense configuration of tactile marks, (Middle) Light configuration with marks only on the borders, (Right) Example of a menu in novice mode. This menu and the selected shortcut on its right side correspond to the red area and the red gesture line in the middle picture.