If the technology incorrectly estimates a user to be under 18, they can verify with a credit card or a government ID. YouTube said it will only allow users who have been verified over 18 to view age-restricted content that may be inappropriate for younger users.

YouTube will begin guessing users’ ages using artificial intelligence on Wednesday, as part of an effort to prevent kids from accessing inappropriate content online.

Critics have raised concerns about privacy as well as access to the platform for users falsely flagged as underage.