What's in a Face?

Alison Killing is a journalist who uses all sorts of data that's available online to track the actions of authoritarian governments. In 2021, Alison won the Pulitzer Prize for her investigations into China where people's faces and movements are constantly being watched. He's a researcher and academic at the University of Sydney. You can see his talk at TED.com. Do you use Instagram? Do you let Google Maps track you? Or do you open your iPhone with your face?