Ubiquitous Computing is the idea of embedding computation onto everyday objects of the environment the people live in. It's the approach towards making technology and computation available everywhere thereby making people interact with abundant information around them in a more natural and friendly manner. The authors' paper, the palm display system is one such approach of using one's palm as the graphical user interface enabling the user to interact with it using the users? fingertip. They have implemented this project using computer vision techniques.