AoA,
If any Goons with no ASIC asked me for mine I would not comply unless they showed me theirs (or any other qualification ID appropriate) simple and that is quite within the law, I have done it before when a temporary security guy who didnt even have one required me to show it, and I told him where to go and call in the manager which he did.
Couldn't agree more with that approach and I think it bloody hypocritical for anyone to be walking around airside checking for ASICs without displaying appriate ID themselves. ATSRs though do prescribe for certain classes of people to be airside without displaying an ASIC. This includes aviation security officers who may or may not be wearing uniform. Regardless, a bit of courtesy goes a long way rather than the jackbooted "I'm security and what I say goes" approach.