The Australian Competition and Consumer Commission (ACCC) and the Australian Communication and Media Authority (ACMA) have warned retailers about their misleading or false marketing for 3D television sets.

The two bodies are concerned that retailers are encouraging consumers that are living in areas where the 3D format is unavailable to buy a 3D television to watch the AFL and NRL grand finals. The games will only be broadcast in 3D in Melbourne, Adelaide, Sydney, Newcastle, Brisbane and Perth.

ACMA chairman Chris Chapman said 3D TV is an emerging technology with a range of issues under consideration, including policy and consumer protection issues, and the future of temporary trials.

"Vacant spectrum being used for these trials is only available on a temporary basis and the technical standards for 3D TV are still evolving,” he said.

According to ACCC chairman Graeme Samuel, consumers should double-check with a special 3D TV viewer hotline set up by the trial broadcasters to ensure they are within the transmission area.