Identifying and testing people who may have been in contact with a COVID-19 positive case is crucial to limit the spread of COVD-19. Contact tracing has been used during previous outbreaks but the scale of this pandemic means that we need to develop the lessons learned and apply them across whole countries using modern technology.
Using smartphones could be the solution but there are privacy concerns - https://privacyinternational.org/examples/apps-and-covid-19 - and many governments have not been able to convince the majority of their citizens to download these apps.
Have you had any experience with contact tracing apps for COVID-19? Would you have any concerns with downloading one of these apps?