But you need to have the browser open the whole day. And my guess is that is not very CPU friendly. And i still don't think you can create a track. It just shows where you are. Not where you've been.

The program will create a KML file to be used in any map service that supports it. It doesn't have to be Google.

And yes. I'm sending the password in the url. Either way you have to get a password to the server. Putting it in the URL means that it's a GET method. If you use a form it will be a POST method. Both send the data exactly the same way so it really doesn't matter (security wise) what you use. If you use https, nobody can see it.

Putting it in the url has a big advantage. You just have to find a way to do the http request. This way it can be easily done from the browser, wget or curl or even telnet.