Not that I’m aware of. The app just reads the data your phone is already collecting.
It’s making use of the api that Apple and Google added to iOS and Android. Which I believe once enabled is using Bluetooth beacons to keep a list of other phones you have been nearby. That’s all done by phone, not the app.
If you test positive, then you are expected to use the app to upload the list of phones you were in contact with.
Notifications will then be sent to all those phones through the app.
It’s making use of the api that Apple and Google added to iOS and Android. Which I believe once enabled is using Bluetooth beacons to keep a list of other phones you have been nearby. That’s all done by phone, not the app.
If you test positive, then you are expected to use the app to upload the list of phones you were in contact with. Notifications will then be sent to all those phones through the app.