This sticker reads emotions (even the ones you try to hide)

Good luck hiding how you feel. Researchers from Penn State University believe they have developed a stretchy, Band-Aid-sized wearable device capable of decoding even the most advanced poker face. The device attaches to a subject's skin and uses sensors to independently detect physiological responses, such as skin temperature and perspiration, in real time. That data is then digitized and analyzed by an AI model designed to determine the type of emotional responses the wearer is experiencing. In testing, the device was able to accurately identify the correct emotional response 89 percent of the time--significantly more accurate, the researchers say, than simply observing a person's facial expression.