This is not the opposite of nothing. It's not that phone tracking hasnt been tried, indeed it did not work where it was tried in e.g. in singapore, korea and no other country made it work. What did work, in multiple countries, is "bring the cases down to very low numbers, interview new cases, isolate aggressively". Perhaps they should focus on the latter 2.

> to automate at scale

If you need to track circulating viruses "at scale" you have already failed, as the apps are going to be popping up false positives left and right and you end up with the entire population individually quarantining themselves.