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by detaro 2031 days ago
It's OAuth. The application can launch a normal browser for the OAuth flow and have the user complete it.
1 comments

For plenty of applications the whole purpose is not to run "a normal browser" and possibly not even have it installed.
You can also use a browser on a different device if your thing can't run a browser itself. OAuth covers a large space of options.
They can spit out a url for you to copy into a normal browser, then.