The invention provides a method for providing human input to a computer which allows a user to interact with a display connected to the computer. The method includes the steps of placing a first target on a first portion of the user's body, using an electro-optical sensing means, sensing data related...http://www.google.fr/patents/US20090300531?utm_source=gb-gplus-shareBrevet US20090300531 - METHOD FOR PROVIDING HUMAN INPUT TO A COMPUTER
