In our solution we are using the iframe widget to display the content of a URL. The solution works correctly, but now we want to pass the username and password parameters to add security. In the past we used https://username:firstname.lastname@example.org/ in a web environment. Looking at the documentation at https://developer.mozilla.org/en-US/docs/Web/HTTP/Authentication we see that it is no longer allowed for security reasons. What would be the option to pass these parameters to it?