It’s a pretty bad App though, it tells the authorities one thing and that is your phone has been within a certain distance of another phone, it relies on people telling the app they have symptoms, which could be anything, it takes no account of the environment, such as if you are outdoors or in a broom cupboard, it relies on self isolation and testing, it will rely on a horde of people sat behind desks relaying this information.
Who is going to pay for the people who have to be at home and self isolate, wait for a test and then the results Only to find out Doris their next door neighbour who sits next to the fence when you go out in the morning has a cold. This all would take at least a week, probably more.
Its a flawed system, and there is no way enough of the public will take it on board, let alone use it properly, and there’s a good chance it won’t work if your iPhone is locked !
As for privacy and misuse, well there is that as well.
A vaccine is the fix and That is the end of it, the “world” should be coming up with one, instead its a competition between countries, and then individual companies and institutes in those countries, al, wanting the financial benefits first to do it has.