Create custom login experiences with credential providers for Windows Vista
Windows Vista offers developers many new opportunities for integrating with the platform. The new Credential Provider model represents one of the most dramatic changes, making it much easier to implement new user authentication scenarios that are supported by the OS. This has replaced the GINA (Graphical Identification and Authentication) model-a model that, put bluntly, is known for being difficult for developers to understand and implement as well as being expensive for Microsoft to support.
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