In our quickly-changing, progressive computer world, we are looking for faster and more natural ways for users to communicate with a computer, especially to work with the programs, interface evolutions, and increasing skills and experience of the humans. Direct and easy working interfaces will have great success in future, because they draw on analogies to the human skills, such as pointing, grabbing, moving objects in space. For designing effective interface it is necessary to investigate thebehavior of the natural eye movements.
