In Windows, the GINA module can be extended to support different ways of authentication. For example, you can already see a support for Fingerprints, Smart Cards, or even Face Recognition (like what Lenovo did with their laptops). What I am trying to achieve is not something as complex as those methods. All what I want is to be able to provide my custom authentication service (i.e My own authentication method at login). Also, I want to know if there is a way to extend the default authentication method (password) so that there is a preprocessing stage of the password before sending it to the Windows Local Authentication Service.
Thank you.