Any evidence, information, document, or article that is obtained, provided, or produced pursuant to a request made under this Part of this Act shall be used by a New Zealand authority only for the purposes of, or in connection with, the criminal matter to which the request relates, unless—
(a) The foreign country to which the request was made; and
(b) In the case of any evidence, information, document, or article obtained from, or provided or produced by, a person while he or she is in New Zealand pursuant to a request made under section 12 of this Act, that person—
consents to the use of the evidence, information, document, or article for any other purpose.