There's some way to create two navigation stacks in Xamarin.Forms App using Prism Library?
I faced this needs to manage two stacks one for the app and another for authentication as shown in the attached image.
Think in scenario when the authentication method of the user has expired(token, session and so on). With another stack it's possible to manage the authentication and afterwards return to exact place before.
(source: xamarinhelp.com)