Some Ethical, Legal, and Social Dimensions of Pandemic Response Technology

Shuangge Wen (SW): The test and trace systems in operation in many countries are a key strategy to lower the reproduction rate and control the virus, with technology enabling measures such as tracing of close contacts, notifying local alerts, and venue check-ins using QR codes. From your technological expertise, how do you see these systems working, and do you see any alternatives which should be explored?