What's happening: China says it's rolling out the tech in Xinjiang, where Uighur Muslims are kept in mass detainment camps, and in subway stations and airports to "identify criminal suspects," per FT. "At present only a few schools and public security bureaus have products that include this type of technology," Zhen Wenzhuang told FT, adding that emotion recognition has "not been fully developed for commercial use" in China. Between the lines: Even if the tech doesn't track emotions as advertised, being watched or even thinking you're being watched can still have a psychological effect and encourage people to change their behavior, as seen in workplace polling. In the U.S., Microsoft claims that its Face API program can identify emotions like contempt, happiness and disgust. Amazon's Reokognition points out that when its API identifies someone's facial expression, it "is not a determination of the person's internal emotional state."