If a teenager signs up for Instagram with a fake adult birthday, Meta wants its AI to notice. The company announced on November 9 that it is expanding its AI age-estimation technology globally, a move it says will place millions more teens into the restricted Teen Account experience.

Here is what is changing, based on Meta’s announcement and coverage from TechCrunch.

What Teen Accounts do

Teen Accounts on Instagram, Facebook and Messenger come with built-in protections. According to Meta, they automatically limit who can contact a teen, what content they see and how much time they spend on the apps.

The catch has always been age. The protections only work if the platform knows a user is a teen, and some teens misstate their age to get a less restricted experience.

How the AI part works

Meta says it uses AI technology to find people it suspects are teens, even if they entered an adult birthday, and places them into Teen Account protections. The company says it has been encouraged by results since first introducing the technology, and that is why it is now rolling it out worldwide on Instagram.

Meta has not published every detail of how the model makes its estimates. What it has said is that the goal is to identify likely teens without requiring everyone to upload sensitive documents such as government IDs.

Coming to Facebook and Threads

The global expansion starts with Instagram. Meta says it is continuing to roll the technology out on Facebook, and that later this year it will begin launching similar technology globally on Threads.

The company ties the expansion to its recent agreement with 52 bipartisan attorneys general across U.S. states, territories and the District of Columbia. As part of that agreement, Meta says it is investing in stronger technology to catch accounts that may belong to children under 13, and to better identify users aged 13 to 17.

A heads-up for parents

This month, parents in the United States will start seeing an in-feed video on Instagram that explains how Meta places teens into age-appropriate protections and how parents can help make sure their teen’s age is accurate. The video links to an article by Larry Magid, internet safety advocate and CEO of ConnectSafely, which describes the company’s multi-layered approach to age assurance.

Apple’s age-range signal in Australia

In Australia, Meta has begun using Apple’s age-range signal as an extra way to understand age. When a parent sets up a teen’s phone, they can have the app store confirm the user’s age range, and that range is then shared with apps the teen downloads.

Meta is using that signal voluntarily, and it argues that age checks should happen at the app store level. In its words, “one verified signal from people’s devices, shared consistently with all apps, is far more effective and privacy-preserving than asking every platform to verify age individually.”

The bigger debate

Age assurance is one of the thorniest issues in tech policy right now. Countries are introducing new rules to protect young people online, but, as Meta points out, many of those laws don’t spell out exactly how companies should determine age. Some approaches require invasive checks for everyone; others leave it to platforms.

Meta is also publicly calling on TikTok and YouTube to adopt similar practices. Critics and regulators will likely keep asking how accurate AI estimates are, what happens when the system gets an adult’s age wrong and how much data it relies on. Those are fair questions, and the answers will shape how widely this approach is accepted.

What you can do

  1. Parents: Look out for the in-feed explainer video and check that your teen’s account shows the right age.
  2. Teens: Expect your account settings to change if the system thinks you’re under 18.
  3. Adults: If you think your age has been misjudged, check Instagram’s account settings and Help Center for your options.

The bottom line

Meta is betting that AI can do what self-reported birthdays can’t: put teens into safer defaults automatically, everywhere. The rollout will be a major test of whether AI age estimation can protect young users while keeping privacy trade-offs acceptable to parents and regulators.

Image: Two iPhones (1091302) by Dariusz Sankowski via Wikimedia Commons, CC0 1.0