In the United States, children under 13 years of age are legally prohibited from using a large number of various Internet services. Including, of course, social networks. But kids also want in Youtube! Therefore, the company is working on a special type of account that will allow children to watch videos and use the mail.
Under Habrakat - details and a survey on the use of social networks by children.

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The company plans to make a system that allows parents to set up accounts for children and control their use of Google services. Earlier this year, by the way, Google already announced the development of a children's version of Youtube.
The main task for Google is not to get caught under the Children's Online Privacy Protection Act (COPPA): after all, it imposes restrictions on Internet companies to collect information on children under 13 years of age (this requires parental consent) and strictly controls the use of data collected on children for promotional purposes.
In the meantime, children have to sit in services where their parents have already logged in for this.