Report from a massive Chinese surveillance tech expo, where junk-science "emotion recognition" rules

Sue-Lin Wong is the Financial Times's South China reporter; this week, she attended the China Public Security expo, the country's largest surveillance tech show, held biannually in Shenzhen. Read the rest

Eminent psychologists condemn "emotion detection" systems as being grounded in junk science

One of the more extravagant claims made by tech companies is that they can detect emotions by analyzing photos of our faces with machine learning systems. The premise is sometimes dressed up in claims about "micro-expressions" that are below the threshold of human detection, though some vendors have made billions getting security agencies to let them train officers in "behavior detection" grounded in this premise. Read the rest