Re: What can't you do on Android WITHOUT a Google Account set up in the OS?

Theo <theom+news@chiark.greenend.org.uk> wrote:

To use a Fitbit, you need a Google account (unless you have a legacy Fitbit
account from years ago).  To use the Fitbit app you need to sign in with the
Google account, which installs the Google account centrally on the phone,
which means that account infests the rest of the OS and gets used for other
stuff (eg Play Services/Store).
 
If your phone vendor supports 'user profiles' you can make a new profile,
add the Google account there. Then it won't interfere with other profiles
and you can terminate the session by logging out after you're done.

I thought all accounts were globally defined.  That's why when you add a
new app with an existing account, it is found from the list in Android.
Any app having you add another account then adds it to the Accounts list
in Android.  Not just Fitbit does this.

Android settings -> General -> Accounts