Some countries are already beginning to set up systems for tracking personal contacts to be used for tracking COVID-19 (and future pandemic diseases?) control. Realistically, once in place, any such system has potential for lots of other uses which raises legitimate concerns about personal freedom not to mention apocalyptic visions of George Orwell's
1984 and "
BIG BROTHER" government control.
In the U.S., Apple and Google have teamed up to propose a
Privacy-Protecting Contact Tracking system which sounds like a contradiction in terms. If you are interested in how they propose to pull that off you can read the
draft technical documentation.
NOTE: Unlike proposals in some other nations Apple/Google's proposal is strictly OPT-IN tracking.