"These are global dominoes," Zigazoo's Zak Ringelstein told Fortune. "The under-16 social media bans are spreading and the next place will be the U.S."

Age verification means that the sector’s biggest players will now have access to information that will only make them richer and more powerful, says technology journalist Taylor…

As Britain and Canada follow Australia’s lead on under-16 social media bans, experts warn the measures may be easy to evade and hard to enforce.