(1) Where an inspector exercises a power under section 21, 25 or 27 (otherwise than pursuant to a warrant) in relation:
(a) land or premises;
(b) a vessel, aircraft or vehicle; or
(c) an article or thing;
the inspector shall forthwith produce the inspector's identity card for inspection by the person (if any) who is in charge of the land, premises, vessel, aircraft or vehicle or in possession of the article or thing and, if the inspector fails to do so, the inspector ceases to be authorised to exercise that power.
(2) Where a Treaty inspector exercises a power under section 22 in relation to any land, premises, vessel, aircraft or vehicle, the Treaty inspector shall forthwith produce for inspection by the person (if any) who is in charge of the land, premises, vessel, aircraft or vehicle, a copy of the declaration made, pursuant to subsection 19(1), in respect of the Treaty inspector and, if the Treaty inspector fails to do so, the Treaty inspector ceases to be authorised to exercise that power.
(3) Where an authorised officer exercises a power under section 23 in relation to any land, premises, vessel, aircraft or vehicle, the authorised officer shall forthwith produce for inspection by the person (if any) who is in charge of the land, premises, vessel, aircraft or vehicle the authorised officer's identity card and, if the authorised officer fails to do so, the authorised officer ceases to be authorised to exercise that power.