consolekit : Framework for defining and tracking users, login sessions and seats. ( http://www.freedesktop.org/wiki/Software/ConsoleKit )
pam_ssh : Uses ssh-agent to provide single sign-on ( http://pam-ssh.sourceforge.net/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a embedded-cross
For Paludis use this rsync : rsync://gentoo.zugaina.org/embedded-cross-portage
If you have a problem : ycarus(-at-)zugaina.org