This makes sense although once you factor in minyanim and the subway (which NYC promised not to allow tracking) just to name two this becomes impractical very quickly
This isn't the kind of tracking that NYC was talking about; this isn't location tracking. I wouldn't even call it tracking at all; your Bluetooth device is just storing in its memory all the devices it encountered for a set amount of time. What you do with that data is entirely up to you.
The app may not be platform specific but if you know anything about the available options you will understand why it would not work on flip phones. (There is a great DDF thread called Revive the flip phone)
The framework was designed to be implemented by individual apps, Google and Apple never plan on releasing their own apps. The idea is for government health agencys to make apps using their framework. As per the CDC website and every other law review website I have found this will have to be done by individual states not on a federal level which the CDC writes (read through their documents carefully) will essentially negate any benefit bc we dont have border control between states (Some US history could shed light on this. When being founded some advocated to essentially have different countries)
In other words the CDC admits such tracing wont work period.
The current medical opinion is that they only need ~60% of usage for this to be effective. While having a single federal program would definitely make it easier, the vast majority of exposures are done in a regional setting, and most neighboring states are already working with each other to combat Covid-19. They can (and will) expand these efforts to include contact tracing. Also, the varied state programs can be developed with interoperability in mind.
The idea of giving out bluetooth bracelets is certainly intriguing and could be extremely effective if deployed at a Federal level but is entirely impractical.
I DO NOT KNOW PERSONALLY KNOW OF A SINGLE PERSON WHO WOULD VOLUNTEER TO WEAR SUCH A BRACELET regardless if the govt claims they are not being tracked.
(Not to mention shabbos)
I think you're too focused on our community; we already see that our communities are (and were!) flouting medical advice, so I agree they wouldn't want to opt in to this. However, our communities make up an extremely minute portion of the US population, and really would have no impact on these tracing efforts in large. Anyways, arguably, tracing in our communities is even easier since we are so intertwined - you can just send out a text on the neighborhood/shul chat
Contact tracing doesn't need to be perfect, it's just one of the tools in the toolbox to keep the R0 below 1.
"Don't let perfection be the enemy of good. --Voltaire"
--Rabbi Frand