text: Im all for the values of using this new emotion technology because you tell if people are faking a smile. You can tell because when you fake it you dont use the same muscles as when you really smile. When you fake smile the muscles you use are zygomatic major that make your mouth stretche sideways and the risori. But when you really smile you use the muscles called zygomatic major that begin at your cheek bones and life the corners of your mouth. The other muscle you use is called orbicularis oculi pars palpabraeus which makes crow's-feet around your eyes.