Haptics is a kind of human-computer interaction technology that uses tactile feedback or other physiological sensations to guide activities or processes in a computer. A haptic interface refers to a type of system that enables human beings to interact with computers using movements and bodily sensations. It is most commonly used in virtual reality settings, where people can interact with virtual items and elements. It uses specially designed sensors to transmit an electrical signal to the computer in response to various sensory movements or interactions. The computer interprets each electrical signal in order to carry out an action or process. The haptic interface, in turn, transmits a signal to the human body or organ in the form of rapid movement and vibration. This book explores the science, engineering and design aspects of haptic interaction in the present day scenario. It is appropriate for students seeking detailed information in this area as well as for experts.