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