post_install() {
  post_upgrade
  # Re-initialize the UPEK device
  if [[ `which udevadm` ]]; then
    for ID in 2015 2016; do
      udevadm trigger --subsystem-match=usb --attr-match=idVendor=0483 --attr-match=idProduct=$ID
    done
    for ID in 2015 2016 1000 1001 3000; do
      udevadm trigger --subsystem-match=usb --attr-match=idVendor=147e --attr-match=idProduct=$ID
    done
  fi
}

post_upgrade() {
  ldconfig
  cat << EOF
Please make sure your user is a member of "plugdev" group if you use UPEK
non-free library:

"sudo gpasswd -a USERNAME plugdev"

and modify your PAM configuration
(e.g., /etc/pam.d/{login,su,sudo,gdm}).

fingerprint-polkit-agent conflicts with files in /etc/xdg/autostart that must
be removed:
  "polkit-gnome-authentication-agent-1.desktop" and
  "polkit-kde-authentication-agent-1.desktop".

Add "debug" switch to fingerprint-gui, you can see the debug log in
/var/log/auth.log

Make sure that directory "/var/lib/fingerprint-gui" and all its subdirectories
are owned by root.root with mode 755 and all files in these directories are also
owned by root.root with mode 600.

Refer to "Manual_en.html" and "CHANGELOG" for more information.
EOF
  # plugdev group changes
  getent group plugdev &> /dev/null || groupadd -r plugdev > /dev/null
  chown -R root.plugdev "/var/upek_data"
  chown root.plugdev "/etc/upek.cfg"
  # fingerprint data changes
  chown -R root.root "/var/lib/fingerprint-gui"
  find "/var/lib/fingerprint-gui" -type d -exec chmod 755 {} \;
  find "/var/lib/fingerprint-gui" -type f -exec chmod 600 {} \;

}

post_remove() {
  getent group plugdev &> /dev/null && groupdel plugdev > /dev/null
}