The study, one of the biggest ever trials of age-checking technology, will likely set the course for lawmakers and tech platforms around the world as they navigate a push to age-restrict social media at a time of growing concern about youth mental health and data collection, according to Reuters. From late 2025, platforms including Meta’s Instagram, Elon Musk’s X, TikTok and Snapchat must show Australians they are taking reasonable steps to keep out users under 16 or face fines up to A$49.5 million ($32 million). Google’s YouTube, a classroom staple, is exempt.