We think of entering Facebook authentication as a login form, but we need to analyze the user's personal information (gender) and, if it is true, to allow access. That is, we want to make it possible for only women to create an account in the application and for this we think of initially using Facebook. Of course this does not eliminate the possibility of creating fake accounts, but at first it would be a reasonable solution.
So I'd like to know if it's possible to perform this "filter" using Facebook profile information and whether this should be implemented soon enough or it's best to base the application first.