Spread bet: China’s coronavirus quarantine

Mark Johnson, The Economist’s Beijing correspondent, discusses the strict lockdowns in China amid the coronavirus outbreak during the New Year. He highlights the challenges of asymptomatic cases and public reaction. Meanwhile, Matt Steinglass, the Europe correspondent, shares insights on Finland's successful 'Housing First' policy that effectively addresses homelessness by providing stable housing first. They also touch on innovative tech like the Chetson device, which captures unique heart vibrations for identification, raising questions about privacy and security.