An information
input method of a computer
system having a
virtual keyboard includes detecting motion information of a user's hands and fingers, determining the locations of the user's hands and fingers by interpreting the detected motion information, displaying an input apparatus having a predetermined shape on the
virtual keyboard of a screen based on the determined locations of the user's hands and fingers, and applying force to a finger corresponding to the location where information is input, if the input information is input by the displayed input apparatus.