The Kanohi Rode was the Kanohi Mask of Truth. It allowed its user to see through any deception or disguise.
The Kanohi Roden [sic, Rode] was the Great Mask of Truth. It could pierce any disguise and spot any deception.
An Iden user's projection would appear to be a ghost to a Rode user.
The Kanohi Rode was the Mask of Truth. Axonn could use it to tell whether someone was telling the truth.
The Kanohi Rode, the Great Mask of Truth, was worn by Axonn. It allowed its user to see through any deception or disguise. It also allowed Axonn to see and communicate with Toa Matoro when Matoro was in spirit form.
The Rode was likely made using disks other than those found in Metru Nui.