Dunno mate, we saw this sort of thing unfold years ago and they wouldn't let some guys practice until they had the sticker. People were sharing helmets, some were swapping the sticker between runs etc etc. The Australian race scene needs a big change, this isn't the change it needs though.
I'm not sure how they will police it but as an official a while back, I was told to inspect helmet stickers. Being a rider and fan of nice things, I didn't stop anyone from riding and later got asked by a top official why I didn't stop a few that were known not have the saftey cushion of the sticker. I said I inspected the helmet as best as anyone onsite could have an no one had a helmet that looked potentially defective, no cracks, no bad marks suggesting a big hit that could potentially crack a helmet. The guy looked at me kind of all glum and said "You can tell a helmet might be cracked if it has scratches on it?" Honest, thats what he said. He was more concerned with the sticker than the actual condition of a rider's helmet.