Interessante que o Jacob tem pesquisa vinculada.

MPX is a way to have multiple pointers in a X-Windows system. The usual X-Windows systems supports multiple input devices, but just one pointer.

What about FocusShare in Windows? Does it already the distribution we need? And can we combine that with CPNmouse which claims to support multiple mice in Windows (see also the sources here)?

• The Hand Mouse: GMM hand-color classification and mean shifttracking (2001)
• VP : Toward A Vision-Based Mobile Input Interface For Anywhere
• Fingermouse: A wearable hand tracking system (2002)
• DiamondTouch: A Multi-User Touch Technology (2003)
• Multi-finger Cursor Techniques (2006)

Approaches: >1 cameras (3D), with markers (colors etc.), infrared

• Visual tracking of high DOF articulated structures: an application to human hand tracking (1994)
• A usable real-time 3D hand tracker (1994)
• Real-time hand tracking and gesture recognition using smart snakes (1995)
• DigitEyes: vision-based hand tracking for human-computerinteraction (1999)
• Fast tracking of hands and fingertips in infrared images for augmented desk interface (2000)
• Hand tracking for human-computer interaction with Graylevel VisualGlove: turning back to the simple way (2001)
• Real-Time Fingertip Tracking and Gesture Recognition (2002)
• SmartSkin - An Infrastructure for Freehand Manipulation on Interactive Surfaces (2002)
• The perceptive workbench: Computer-vision-based gesture tracking, object tracking, and 3D (2003)
• Real-time Hand Tracking and Finger Tracking for Interaction
• Real time hand tracking by combining particle filtering and mean shift (2004)
• Fast 2D Hand Tracking with Flocks of Features and Multi-Cue Integration (2004)
• Visual Touchpad: A Two-handed Gestural Input Device (2004)

Characteristics: Two cameras.

• Automatic 2D Hand Tracking in Video Sequences (2005)
• Interacting with large displays from a distance with vision-tracked multi-finger gestural input (2005)

Characteristics: Two-handed, two cameras, black input area (with id tag), gestures, based on Visual Touchpad.

Well, there is no lack of publications in this field…