Note that the function below does NOT work if two factor authentication is enabled. Use the browser extension instead.

Submit your data here to use it in the front page.
After you have added your badges find your username in the Username dropdown.

Username is displayed in the main page and in other pages. Email will not be displayed and is only for user identification if you would like to delete your data and to protect your username so no one else can use it.
Username is not stored. It is only used for fetching the earned badge data. Password is not stored. It is only used for fetching the earned badge data.