It's very difficult to find aftermarket keypad immobilisers these days. Autowatch have a keyring(remote) keypad(numeric code) immobiliser. They no longer have the fixed version.

Ironically [url=http://www.brant.com.au/]Brant[/url] still do a fixed version, but they wont sell it to any third party dealers in Australia for aftermarket fitment. This seems crazy considering they are fitted to Subaru's here in Australia. Maybe it has something to do with supply and fitting contracts?

I believe having an alarm with anti-hijack is generally sufficient. But I have done numerous vehicles with both anti-hijack and numeric code immobilisers, so if that is what makes a person comfortable then so be it.

There are a few different GSM based paging systems and GPS tracking systems available but they all need to be integrated to work in conjunction with an alarm system.

As for remote start, it is illegal in Australia, and you won't find a government or insurance approved alarm with that as a feature.