Well, to be more precise, it populates username and password by default. But it's configurable to do other things, too. Check out Advanced Options->Global Settings->Action to take when CoolKey is activated.
And it works very well, just used it to login on here. Many of the NEW features do work very well. Have not had a chance to try them all yet.
Thank you ERIC H. Jung. A job well done and still going,