Therefore, my intention is that the South Australian legislation will prevent the sale of MA15+ games to minors. This move will give parents greater certainty about the appropriateness of games for their children.
From what I gather, the aim is to make parents/guardians responsible for the content they are viewing/playing, and forcing them (or anyone over 18) to be there at the time of purchase.
However, this goes against the description of the MA15+ rating...
[From http://en.wikipedia.org/wiki/Australian_Classification_Board ]
MA15+ (Mature Accompanied for those under 15) - Persons under said age may only legally purchase, rent, exhibit or view MA15+ rated content under the supervision of an adult guardian. The exhibition of these films to people under the age of 15 years who are not supervised by an adult guardian is a criminal offence. Recommended for 14-15+.