Cookie Based Authentication (edit)
Cookies Bank Allowance
https://bankofallowance.com/legal/cookies
https://www.mikesdotnetting.com/article/281/implementing-googles-eu-end-user-consent-policy
Blogs
https://www.hanselman.com/blog/archives.aspx
ASP.NET Core MVC
https://docs.microsoft.com/en-us/aspnet/core/security/gdpr?view=aspnetcore-2.2
https://docs.microsoft.com/en-us/aspnet/core/security/authentication/cookie?view=aspnetcore-2.2
https://www.c-sharpcorner.com/article/cookie-authentication-with-asp-net-core-2-0/
ASP.NET & ASP.NET MVC
http://www.binaryintellect.net/articles/a2bf5c05-18a6-44b3-9f73-5896b40f0dff.aspx
https://www.aspsnippets.com/Articles/Cookie-based-Authentication-Login-example-in-ASPNet-MVC.aspx
http://www.primaryobjects.com/2012/12/07/mvc-forms-authentication-and-storing-data-in-the-cookie/