An ASIC is not a means nor guarantee of entry. It is only an indication to another that you have passed certain government mandated background checks. You still require legitimate reasons to be where you want to be. Many people think that just because they have an ASIC they can go wherever they want on an airport but that is simply not so. The government for it's own bureaucratic reasons (and I certainly don't agree with the whole ASIC rigmarole) has made the requirements for holding an ASIC to be just one part of access to certain areas.