As promised by both Apple and Google the ability to anonymously track if you may have been exposed to COVID-19 is now available. On updated iPhone's it is already there and just needs to be enabled. On Android devices you must download the app. 

HERE'S THE PAGE WITH MORE INFO

How does it work?

When you enable WA Notify, your phone exchanges random, anonymous codes with the phones of people you are near who have also enabled WA Notify. The app uses Bluetooth Low Energy (BLE) technology to exchange these random codes without revealing any information about you. If another WA Notify user you've been near in the last two weeks later tests positive for COVID-19 and adds their verification code to the app, you’ll get an anonymous notification that you’ve had a possible exposure. This lets you get the care you need quickly and helps prevent you from spreading COVID-19 to the people around you.