So, the code in the following articles was built for and tested with ASP.NET Core 2.2. The main concept, however, is still the same and were not changed since ASP.NET Identity 2.0 (I guess)...

Sometimes, when you build a multi-tenant web-application you may need to set up a "master password" to your system - the password which allows some administrator to login to any user's account. Something similar to `su` command in Unix/Linux systems...

This task usually appears when you need to transfer your old MVC web application to ASP.NET Core. If you use MVC version 3 or 4 and your application provides a user authentication service, then most likely this part is done with the old ASP.NET Membership library...

Since we need to register a user for testing purposes first of all - we don't want to make the password too complicated. We'd prefer to keep it simple and easy-to-remember (in the end - it's not a production-mode system!)...

With this post, we start a series of articles that describe the different aspects of using ASP.NET Identity in your ASP.NET (Core) applications...