/etc/hal/fdi/policy/10-synaptic.

[root@TheSwan ~]# cat /etc/hal/fdi/policy/
cat: /etc/hal/fdi/policy/: Is a directory
[root@TheSwan ~]# cat /etc/hal/fdi/policy/10-synaptics.fdi
<?xml version="1.0" encoding="ISO-8859-1"?>
<deviceinfo version="0.2">
  <device>
    <match key="info.capabilities" contains="input.touchpad">
        <merge key="input.x11_options.SHMConfig" type="string">True</merge>
        <merge key="input.x11_driver" type="string">synaptics</merge>
    </match>
  </device>
</deviceinfo>