[Question]: Is there a demo or guidance on how 2 applications can implement "SSO"(as I understand it) that exist under different sub domains?

[AFDevMike]

What Version of the library are you using?
15.0.2

Question
I have an STS with the Authorization Code PKCE flow.

Is there a demo or guidance on how 2 applications can implement "SSO"(as I understand it) that exist under different sub domains?

I.e. In google you can open mail.google.com in 1 tab/window and news.google.com in another. If you log in or out on either, the other immediately shows logged in/out.

My understanding is its feasible to implement AbstractSecurityStorage with cookies. But I don't want to break the security and I see a comment that even 'LocalStorageManagerService ' is less secure.