Apple Lays Groundwork for Coronavirus Exposure Notification API in iOS 13.5 Beta 3 and New Xcode 11.5 Beta [Updated]

[nicolas17]

Apple/Google should add an app feature that lets you delete the phone-to-phone contact data from the last N minutes. That way, if you're close to someone else when there's a barrier (like a window) between you, you can prevent it from being recorded as a contact event. If one of you later gets COVID-19, it will prevent a false alarm from being sent to the other person.

That's already possible in the API. Making it accessible to the user is up to the app, which isn't made by Apple/Google.