b1d481f6_ess___Federal_Trade_Commission__ation_without_parental_consent
parent’s online contact information You can’t otherwise collect, use, or disclose the information. You must: tell parents you collected their online contact information to let them know about their child’s activities on a site or service that doesn’t collect personal information; tell them their online contact information won’t be used for any other purpose; tell them they may refuse their child’s participation and require that you delete their contact information; and hyperlink to your privacy policy.
To give voluntary notice to a parent about their child’s participation on a site or service that doesn’t collect personal information
Children’s Online Privacy Protection Rule: A Six-Step Compliance Plan for Your Business | Federal Trade Commission
Reason you may collect information without parental consent