There are ways to extend or modify security to handle your site's requirements which apply to the most common configurations:

Add your own extra layers of security

You do not have to use Framework security

A user who signs on with one profile can be automatically changed to another

Two different Frameworks can share the same set of users

User and security data can be stored as an XML file instead of using tables VFPPF06/07

You can store other information relating to a user

Export or Import of Full or Partial User Data