The UK pilot led to the removal of thousands of additional accounts under 13.
Despite extensive efforts, there is no globally agreed way to confirm a person's age while preserving privacy, TikTok said. For appeals against bans, the company will use facial-age estimation from verification provider Yoti, along with credit-card checks and government-issued identification.
Meta (META.O), opens new tab also uses Yoti to verify users' ages on Facebook.
TikTok said the new technology was built specifically for Europe to comply with the region's regulatory requirements. The company has worked with Ireland's Data Protection Commission, its lead EU privacy regulator, while developing the system.
European users will be notified as the technology launches, TikTok said.