There are currently no periodically precompiled packaged builds (e.g. .deb or .rpm files), only on certain updates.
For building the source by yourself, you need to have the following few packages installed on your system in order to checkout, compile and install pam_usbng:
Note: pam_usbng has been designed to be fully associated with UDEV in spite of devfs. Therefore, make sure to run UDEV as device filesystem on your machine (like most current distributions do out of the box, as far as I know).
$ svn co svn://delta-xi.net/svn/pam_usbng
$ cd pam_usbng $ make $ sudo make install
Although not recommended, you may also get a precompiled Debian package suitable for most Ubuntu and Debian versions. Only tested to work with Ubuntu 8.04 LTS.
$ wget http://packages.delta-xi.net/pam_usbng-v0.2.deb $ sudo dpkg -i pam_usbng-v0.2.deb
This is basically a snapshot of the svn code-base, hopefully regularily updated.
$ wget http://packages.delta-xi.net/pam_usbng-snapshot141208.tar.bz2