flow problem

[Stefano Mazzocchi]

I just found out that the current flow implementation doesn't allow the 
flow to access internal-only pipelines.

Is there a specific reason for this or it's just the way it's currently 
implemented?

I'm asking because I wish it was possible to send internal-only 
pipelines to the user from the flow. This would make it *super easy* to 
implement an authentication framework using the flow and provide a very 
solid foundation for writing secure web applications.

Thoughts?

Stefano.