Apple is introducing support for COVID-19 Exposure Notifications without downloading an app in iOS 13.7, but iPhone users remain in control.
Phase two of the Apple/Google contact tracing plan
Apple is currently beta testing its iOS 13.7 update among developers. The main addition to the new app is the expansion of the COVID-19 Exposure Notification API.
Apple says this will let iPhone users opt-in to receive Exposure Notifications without the need to download an app from your local public health authority.
When Apple and Google jointly announced the move to introduce contact tracing tools within their operating systems they committed to enabling a Bluetooth-based contact tracing platform by building this functionality into the underlying platforms.