Using Claims Types properly in Owin Identity and Asp.Net MVC

Question

I am using Owin and Identity and I am having a problem with Claims.

I have applications where users use an email to authenticate and others that use an username.

Answer 1

ClaimTypes.Name (http:// schemas.xmlsoap.org/ws/2005/05/identity/claims/name) should be used for the username.

ClaimTypes.NameIdentifier is typically used for the user's id. In some cases it could be a username.

ASP.NET Identity uses ClaimTypes.Name to store the username, and ClaimTypes.NameIdentifier to store the primary key GUID of the user.