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.
Identity document
For most people, driver's licenses issued by the respective state and territorial governments have become the "de facto" identity cards, and are used for many identification purposes, such as when purchasing alcohol and tobacco, opening bank accounts, and boarding planes, along with confirming a voter's identity in states with voter photo identification initiatives. Individuals who do not drive are able to obtain an identification card with the same functions from the same state agency that issues driver's licenses. In addition, many schools issue student and teacher ID cards.