HAPTICS (pronounced HAP-tiks) is the science of applying touch (tactile) sensation and control to interaction with computer applications. By using special devices (joysticks, data gloves, or other devices), users can receive feedback from computer applications in the form of felt sensation in the hand or other parts of the body.
In combination with a visual display, haptics technology can be used to train people for tasks requiring hand eye coordination such as surgery and space ship maneuvers. It can also be used in games in which you feel as well as see your interactions with the images. For example, you might play tennis with another computer user somewhere else in the world. Both of you can see the moving ball, using the haptic device, position and swing your tennis racket and feel the impact of the ball.