1. A method for displaying a virtual image of at least a portion of a hand of a user on a display screen of a computerized system, the method comprising: obtaining data from a touchpad, the data being associated with the location and movement of a finger and/or hand of the user and not associated with an image of the finger of the user from an image sensor, when the user operates the computerized system using the touchpad; communicating the data from the touchpad to the computerized device, the touchpad being located in a location that is different from the location of the display screen; analyzing the data in accordance with a model of a human hand, and assigning the data to at least one of a plurality of fingers of the model; computing a graphical representation of at least one finger of the user in accordance with the model; and displaying the graphical representation on the display screen.