An Indian whose name is in the Indian Register established by the Act is said to have Indian status or treaty status. An Indian who is not registered is said to be a non-status Indian. Prior to 1985 status was often lost in ways which are now considered unfair. The Act was amended in 1985 to restore status to people who had lost it in one of these ways, and to their children. The ways in which status were lost were:
marrying a man who was not a Status Indian
enfranchisement (until 1960, an Indian could vote in federal elections only by renouncing Indian status)
having a mother and paternal grandmother who did not have status before marriage (these people lost status at 21)
being born out of wedlock of a mother with status and a father without.
The act was at the centre of the 1969supreme court case R. v. Drybones regarding the consitutionality of a clause forbidding Indians to be drunk off the reserve.