(a) the provider provides alternative means (not involving the material and services mentioned in paragraphs (1)(a) and (b)) for an individual to assure the provider that the individual is not an age-restricted user; and
(b) those means are reasonable in the circumstances.
(a) the provider provides alternative means (not involving the material and services mentioned in paragraphs (1)(a) and (b)) for an individual to assure the provider that the individual is not an age-restricted user; and (b) those means are reasonable in the circumstances.
https://parlinfo.aph.gov.au/parlInfo/download/legislation/bi... - page 8
So it doesn't actually provide an alternative, just says the nerds need to magic one up.