In Australia, publications such as books and magazines (though they would also include other printed media such as calendars, cards and catalogues, among other things) are required to be classified if they contain depictions and/or descriptions of sexuality, drugs, nudity or violence that are unsuitable for a minor or even an adult who would take offence if sold as an unrestricted publication. They are most commonly applied to publications which contain sexualised nudity.
There are four classification categories:
- Unrestricted: These publications are unrestricted, although they may not be recommended for readers under 15 years.
- Category 1 restricted: Publications which are not available to readers under 18 years. Additionally, they must be distributed in a sealed wrapper, and their covers should be suitable for display in a public place.
- Category 2 restricted: Publications which are not available to readers under 18 years. Contents of the publication are likely to contain explicit images of sexual activity, and Category 2 restricted publications can only be displayed in sites which are restricted to adults.
- RC: Publications which cannot be sold or displayed anywhere in Australia.
In addition, Category 1 and Category 2 restricted publications are not to be sold in Queensland according to state legislation.