When you say cannot actually help fight the pandemic do you have any reason to believe they won't work from a scientific point of view?
Sorry if I have missed it, but to me your arguments were privacy issues and the technical difficulties (different platforms, Support) to get an app on enough smartphones to reach the critical number of participants.
Don't get me wrong I totally agree, these are things that we first need to find a solution.
But your post sounded to me like you have the opinion that contact tracing doesn't work.
Sorry if I have missed it, but to me your arguments were privacy issues and the technical difficulties (different platforms, Support) to get an app on enough smartphones to reach the critical number of participants. Don't get me wrong I totally agree, these are things that we first need to find a solution. But your post sounded to me like you have the opinion that contact tracing doesn't work.