The article touches on some #privacy concerns, but much depends on this being voluntary. My concern is it will be false choice like many TSA rules: ie. you can "choose" to use the app and resume work/public life or "choose" to stay at home. https://www.washingtonpost.com/technology/2020/04/10/apple-google-tracking-coronavirus/
@leimon I have to say, knowing I can go outside and disable Bluetooth and wifi with a kill switch is pretty comforting. Not to mention having full control of the software on my phone.