Login Box and Logged In User data on each page.

[eluser]CroNiX[/eluser]
There are many ways, but the easiest probably is a base controller or a library that gets autoloaded which would check the login state on each pageload automatically. I generally have what I call mini views, of which one would be a login form, which is part of my template and gets autogenerated on every page page reflecting the current login status/options.