City of Sydney Relationships Declaration
Other institutions such as the Registry of Births Deaths and Marriages no longer accepts an Australian Marriage Certificate as a form of ID – this creates an equal situation for both opposite sex and same sex couples as both are not allowed to present their relationship certificates as a form of ID.
Birth certificate
Birth certificates in Australia can be verified online by approved agencies through the Attorney-General's Department Document Verification Service and can be used to validate identity digitally, e.g. online.