Upon reviewing the 4 levels of ID required to apply for an ASIC. It requires a very thorough ID verification vetting procedure administered by a federal government department starting with Birth Certificate at the top, ID Category A. The next level down, Category B, is a Passport or Drivers License. Under that is Category C ID is anything connected to community involvement; such as a Library Card (not very difficult to attain, takes about 20 minutes, everybody should have one). The lowest level of ID , Category D, is a Services Bill; but you only need this if nothing else displays the applicant's current address.
There are lots of ID checks required on every ASIC application whether it is a new application or renewal; same ID vetting procedure is used every two years. It is very thorough and involved process to go through before being granted this High Security clearance; lots of ID required to verify the identity of the recipient; and rightly so; this is a High Security clearance.
Looking at the forms of ID recognised as acceptable in each category it clearly states that a current ASIC card is accepted to be submitted for ID vetting under Category C, Community Involvement, where the Library Card ID can also be found.
It's a good system. It keeps our skies and airfields safe from those that may wish to do us harm. It creates employment for those that may not otherwise have an opportunity to be a contributing member of society. It gives people a sense of confidence and purpose. And provides access to otherwise unknowable airside security gate codes.