text: The study the ability of humans to read subatle changesin facial expressions, thast they appiled reverse correlation technique to reveal visual features that mediate understanding of emotion expressed by the face. Facial expression not only expresses emtions but also even help reproduce them. The thought of making faces could reveal so much about the science of emotions.Being able to detect other peoples and even your own feelings when you want to just by looking into a computer to detect whether you are happy,sad or angry is unique. But if you are not willing to share or show that information at a public place it would not be. Especially when your surrounded by your own classmates and one of classmates accidentally sees what the technology detects on you or someone else.