Touch user interface In virtual 3D learning environments

The word haptic comes from the Greek word hap tin. Devices, which allow the user to have great sensory effects of force, touch, vibration, temperature, and possibly a combination of any of these sensations together. Haptic Displays are often coupled with input devices so that they can provide a quick feedback loop between measuring user movement and touched feedback sent to the user, while ensuring low latency between human motion and tactile feedback which is a key requirement for creating an effective display.