Scientists create online games to show risks of AI emotion recognition

Public can try pulling faces to trick the technology, while critics highlight human rights concerns

It is a technology that has been frowned upon by ethicists: now researchers are hoping to unmask the reality of emotion recognition systems in an effort to boost public debate.

Technology designed to identify human emotions using machine learning algorithms is a huge industry, with claims it could prove valuable in myriad situations, from road safety to market research. But critics say the technology not only raises privacy concerns, but is inaccurate and racially biased.