Many thanks Fieldmouse.
So reading this is would not be impolite to request an airport security guard to produce identification as per 2B???
The reason I ask is a person purporting to be a security guard at my local pedantically asks to see, read and note down my ASIC card details most times I see him. Last time this happened I pointed out that he had done this less than a week ago and politely asked for his credentials. He showed me his ASIC card and he pointed to his car and became irate.
My sincere hope is that this matter will quietly pass but it has the potential to become a battle of egos.