(1) Subsection (2) applies to the tax file number of a person that is provided to the Secretary:
(a) under a provision of this Act, for the purposes of this Act:
(i) by the person; or
(ii) by the partner of the person; or
(iii) by the Commissioner of Taxation on the authority of the person; or
(b) by the Commissioner of Taxation under section 123.
(2) A tax file number provided to the Secretary as referred to in subsection (1) may be used only for the following purposes:
(a) to detect cases in which instalments of parental leave pay have been paid when they should not have been paid;
(b) to verify, in relation to persons who have made effective claims for parental leave pay, the eligibility of those persons for that pay.