Migration Act 1958

A person, whether a citizen or a non‑citizen, who enters Australia must, without unreasonable delay:

present the following evidence (which might include a personal identifier) to a clearance authority:

if the person is a citizen (whether or not the person is also the national of a country other than Australia)—the person’s Australian passport or prescribed other evidence of the person’s identity and Australian citizenship;

if the person is a non‑citizen—evidence of the person’s identity and of a visa that is in effect and is held by the person; and

provide to a clearance authority any information (including the person’s signature, but not any other personal identifier) required by this Act or the regulations; and

comply with any requirement, made by a clearance officer under section 257A before an event referred to in subparagraph 172(1)(a)(iii) or (b)(iii) or paragraph 172(1)(c) occurs, to provide one or more personal identifiers to a clearance authority; and

if under paragraph (a) the person presents evidence to an authorised system—provide to the authorised system a photograph or other image of the person’s face.

A person might be taken to have complied with this section under subsection 167(3) or (4) or might not be required to comply under section 168 or 169.

A person may comply with a requirement referred to in subsection (1) to present or provide evidence, information or personal identifiers to an authorised system only if:

the person holds an eligible passport; and

either:

before an event referred to in subparagraph 172(1)(a)(iii) or (b)(iii) or paragraph 172(1)(c) occurs, a clearance officer does not require the person to present or provide evidence, information or personal identifiers referred to in subsection (1) of this section (other than a passenger card) to a clearance officer; or

if subparagraph (i) of this paragraph applies—a clearance officer determines that the person has complied with subsection (1) of this section.

Subject to section 167, a person is to comply with paragraphs (1)(a) and (b) of this section in a prescribed way.

A person is taken to have complied with subparagraph (1)(a)(i) if a clearance officer knows or reasonably believes that the person is an Australian citizen.