How can I make an Login System with Kotlin GUI Form?
Please, provide more info about your needs, what did you try and what did you achieve so far. That way it would be easier for us to help you and the forum would be cleaner.
And also try not to spam with many posts that could be related in some way or if the answer to one can lead to the solution of the other one problem.
If you’re targeting desktop, then you can use anything that works in Java for making GUIs and a login system. If you do not find anything useful in Google, then you can find Java answers or tutorials and call Java from Kotlin following this guide: http://kotlinlang.org/docs/reference/java-interop.html.