"Can we replicate S. Korea's contact tracing programme?"
My answer: probably not as efficiently.
Why? S. Korean law allows for warantless access to private data during times like these. Does your country?
as the activities of each user is under strict surveillance".
South Korean government says all the personal data stored in the platform will be deleted once the COVID-19 official response is over.
The way I see it is, it's all or nothing. It takes one person to slip through the net and infect the rest.
This should have been considered well before people started dying.
Privacy was never really an issue in South Korea. Safety was.