The COVIDSafe app hasn't come out of nowhere. The promises of 'smart city' data collection may be seductive, but we must always weigh up what we're being asked to give up in return.
Surveillance software that identifies people from CCTV is eroding human rights and democracy.
Even governments in democracies with strong traditions of rule of law find themselves tempted to abuse these new abilities.
Health and demographic surveillance systems are important to understand people and the societies that they live in.