Who gets to decide what is porn and what isn't?

That's a question the Chief Censor says the Government will be struggling with as it looks to keep Kiwi kids shielded from the "avalanche of pornography" they are being exposed to, according to Children's Minister Tracey Martin.

Martin is looking at what can be done to make it more difficult for children to access it, whether deliberately or accidentally. Advice to Martin, who is also Internal Affairs Minister, is that our laws are woefully out-of-date.

"The fact is our regulations today are designed for that world," Chief Censor David Shanks told The AM Show on Monday.

"My Act is 1993, the Broadcasting Standards Act is earlier than that. Our regulations were designed for a media environment that is totally different from what we're faced with today. It does need to change."