Most Americans are not willing or able to use a contact tracing app

Apple and Google have released the first version of their COVID-19 contact tracing app API (they’ve rebranded it as “exposure notification”) in a new developer release. The firms are looking to collect feedback from developers who will be using the API to create new contact tracing (“exposure notification”) apps.
In the U.S., it’s very likely a quixotic exercise, as nearly 3 in 5 Americans say they are either unable or unwilling to use the infection-alert syst