Providing false or misleading identity information to a police officer is an offence under section 13 of the Law Enforcement (Powers and Responsibilities) Act 2002 which carries a maximum penalty of a fine equivalent to two penalty units.
To establish the offence, the prosecution must prove beyond reasonable doubt that:
Section 11 of the Act requires you to disclose your identity to a police officer if your identity is not already known to the officer and:
You are not guilty of the offence if you establish, on the balance of probabilities, that you had a reasonable excuse for your conduct.
General legal defences to the offence include duress, necessity and self-defence.
If you are able to raise evidence of a general legal defence, the onus then shifts to the prosecution to prove beyond a reasonable doubt that the defence does not apply to the circumstances of the case.
You are entitled to an acquittal if the prosecution is unable to do this.