This article is about making Mona Lisa smile but the main thang for this article is a new technology called the Facial Action Coding System enables reserchers to use computers to identify human emotions. It is saying in the article that "new software has been developing that improves accurace in perceiving the emotions of others. This new software,the Facial Action Coding system,has promising applications for a variety of industries." One of this details tell use that Mona Lisa is"83 percent happy,9 percent disgused,6 percent fearful,and 2 percent angry."This all stared when the subject of Leonardo da Vincil's of his renaissance panting of Mona Lisa, when"at least according to some new computer software that can recognize emotions. This new"software is the latest innovation from Prof. Thomas Hung of a advanced science University and how he thinkes people and computers can communicate. It all comes to geter with 3-D nd the model of the face and it shows the 44 major muscles in the model, it also shoes one or more muscles is called an action unit.