When I think about the problem statement I see some type of identity verification service which can be public and require higher level KYC before granting acces

When I think about the problem statement I see some type of identity verification service which can be public and require higher level KYC before granting access. Think if the tech sites allowed for student access like a Facebook social loving integration. Instead of directing to fb they could be directed to an IdP which contains validated age metadata that the sp would accept and then minimize privilege gates?