Meta is expanding its age-verification tools by using AI to detect teenaged users and then automatically placing them into more restrictive Teen Account settings even if the user entered an adult birthday.

The company says 54 million teens have been enrolled in the age-gated accounts so far, and the same model was recently extended to Facebook and Messenger.

Instagram is expanding its AI age detection software to root out teens masquerading as adults. If the AI makes a mistake, however, it's possible real adults will have their accounts affected.