If age isn't verified, Google will turn on YouTube Digital Wellbeing tools (which include things like bedtime and break reminders and safeguards on content recommendations), disable Timeline in Maps, turn off personalized advertising, and prevent the user from accessing Google Play apps intended for adults.

YouTube will start using machine learning to determine whether viewers should be on a teen account. The company said it plans to start using this AI application on a subset of US users in the coming weeks for a trial before rolling it out to the rest of the market.

YouTube is rolling out a new AI that tries to guess whether you're an adult or a teen. If it determines you're underage, it will apply protections to your account—and it's on you to fix it if it's wrong.