Tech can, at best, accelerate contact tracing.
They're building a framework, not the apps that use the framework. Those apps will get some data, and the framework exists to *minimize* how much data they get.
Critically, research shows we only need to contact trace 60+% to contain. Also, contact tracing can be accelerated via the app, but doesn't need to be done only via the app.
I'm not sure, except I'll say that, once we all internalize what's at stake & how necessary contact tracing is, I think we'll find a path to usage.