Instead of ASIC you mean ASIO?
Nope, meant ASIC, as in the Airside Security Identification Card
The vast majority of people boarding the plane are not required to have any security background check or national police certificate - these people are called the passengers...
Yeah, that point does need some clarification. Most passengers before boarding international flights go through some form of electronic intelligence screening. While it may not be to the level of detail gone into for ASIC, MSIC's etc, there's a reasonable level of checking to ensure you're not a terrorist, or funding/associated with those with intent to do harm to others (broad meaning, but that's anything from terrorism groups, fundamentalist groups, violent radicals, etc)
Finally, having viewed some police checks for people signing up for the military. I'd say that in general they are not worth the paper they are printed on. Why? Well I know you're a clear skin now. I just tell them that my name is your name and the reply is "the person with the name xx_ has no criminal record*" (or similar) "*we can't guarantee that the person is actually the real person named xx_"
Very true. Most NPC's aren't required to go into the level of detail, say fingerprint or other cross-checks, necessary for confirming the person who's a cleanskin and received the clean NPC is who they say they are.
The same applies for useless name-based cross checking implemented in the US as part of their response to 'keeping the skies safe' (gag me with a spoon please).
My point is that someone who's been permitted to access an airside area for a purpose other than travel should have been subject to the same checks as others in this category of person. I know for a fact I wasn't, and that the systems in place, while better than what was there before, still leave gaping holes in the security systems protecting airlines and airports.
Similarly, how far do nations go in the area of identity verification and checking? As we know, Australians have historically been against the idea of a national identity system since the introduction of the Australia Card - but has this possibly irrational fear lead to some of the situations we currently experience with services (eg. health and welfare) and security in terms of lax systems, rorting, and excessive cost of deliver?
Anyway, that's something else entirely and way off topic.