11/30/2020
Washington State just rolled out a tracing app that will inform you if you (while carrying your cell phone) might have been exposed to a person who is positive for Covid-19.
You need to activate it though, to be able to take advantage of it. It is free and it uses random codes, so it does not collect private data.
https://www.seattletimes.com/seattle-news/health/wa-notify-system-goes-live-with-covid-exposure-notifications-for-iphone-users-in-washington-state/
To turn on WA Notify on an iPhone:
Go to Settings
Scroll down to Exposure Notifications
Click “Turn On Exposure Notifications”
Select United States
Select Washington
To use with Android:
Go to the Google Play Store
Download the WA Notify app
Washington Exposure Notifications — which aim to let folks know of possible COVID-19 exposures — are live for iPhone and Android users. Here's how the technology works and how it protects your privacy.