in real world terms
I think it would work something like,
no syptoms + negative L.F. = carry on.
No symptoms + Positive= get a PCR test and isolate.
If you develop symptoms, isolate and get a PCR.
Regarding business model, these tests are less than £1 each to manufacture. So yes huge market
(, Mon 21 Dec 2020, 17:40, Reply)