I have a bot running on a hosting page where users are logged in using SSO.
I want to authenticate the user in the bot automatically when the bot starts and I do not want to use anAuthCard to do it. Just want to automatically authenticate the user without prompting anything to him, just using SSO.

I found an article that refers three ways to authenticate an user in the bot:

Sharing the client's user token directly with the bot via ChannelData
Using an OAuthCard to drive a sign-in experience to any OAuth provider
A third option, called Single Sign-On (SSO), that is in development.
And, according to the article my situation is:

WebChat in an authenticated website where the user is already signed in and the website has a token to the same identity provider but to a different app that the bot needs -> in the future, this is single sign-on, but for now you 'll need to use an OAuthCard.

Is there any update about this functionality? How can I authenticate the user into the bot without using an OAuthCard or a SigninCard?

Thanks in advance