My goal is:

Login to different wordpress sites of mine without any steps other then pressing a link.

So for example the link will be:

https:/domain/wp-login.php?username="admin"&password="Hadfieiw9cu#$4asdfk@iI*fSfaeeofokffd"

Something like that. a way to give a link with code inside it that will make automatic login to the wp admin.

Now there is a plugin that does this: Auto login links, but this isn't so secure.

I would like to use the username and password way, but only shortent the login process by entering the username and password in the link and not having to type them in the login form and click "login".

Any ideas how to accomplish this kind of goal?