(1) Before requiring a person to answer a question or provide information or a document under this Part, an inspector must—
(a) identify himself or herself to the person as an inspector by producing the inspector's identity card or in some other way; and
(b) warn the person that failure to comply with the requirement or to answer the question, without reasonable excuse, would constitute an offence; and
(c) advise the person about the effect of section 172; and
(d) advise the person about the effect of section 269.
(2) Nothing in this section prevents an inspector from obtaining and using evidence given to the inspector voluntarily by any person.