libfprint : library to add support for consumer fingerprint readers ( http://cgit.freedesktop.org/libfprint/libfprint/ )
polkit : Policy framework for controlling privileges for system-wide services ( http://www.freedesktop.org/wiki/Software/polkit )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a gentoo-playground
For Paludis use this rsync : rsync://gentoo.zugaina.org/gentoo-playground-portage
If you have a problem : ycarus(-at-)zugaina.org