India, Nov. 10 -- Meta said on Monday, November 9, that it would expand its AI-powered age-estimation technology globally on Instagram, a move expected to place millions more teenagers under Teen Account protections, even if their profile birth dates indicate that they are adults.

Meta's AI technology does not rely solely on the date of birth entered by users. It examines profiles for contextual clues, including mentions of school grades and birthday celebrations, across posts, comments, bios and captions. Meta has also described a separate visual-analysis system that examines photographs and videos for general age-related clues, such as height and bone structure, to help identify underage accounts.

Accounts identified as likely belongi...