you will still be able to sign your name but you also have to have a legal guardian sign
No he does not.
Yes, typically you need a valid form of identification to sign a birth certificate.
You have to prove paternity in court and then get their consent to sign.
No, you cannot sign a birth certificate if you are not the biological father.
You haven't explained whose birth certificate. If it's her biological child then she must sign the birth certificate. The biological parents of the child sign the birth certificate.
Why would you want to sign a birth certificate?
Yes, if DNA testing confirms that the man is the biological father, his name can typically be added to the birth certificate. The process may vary by jurisdiction, but generally, both parents would need to provide consent, and any necessary legal documentation would need to be completed. In some cases, if the parents are unmarried, they may need to sign an acknowledgment of paternity.
Ordinarily this happens shortly after the child's birth.
He can always ask, but it will need an attorney involved.
The mother is the legal guardian from birth and can give the child any name she wants but she can not sign for the father on the birth certificate. He have to sign it and if she was below age of consent when the child was conceived he can go to prison for statutory rape.
Apart from a certified copy of your birth certificate you also need a notarized statement of parental consent and the parent or legal guardian has to appear at the same time as the minor to show their identification and to sign the parental consent form. In Greenville that can be done at:Greenville County ClerkMarriage License301 UniversityRidge # 1200Greenville, SC 29601864-467-7571
It will depend on the laws in the specific jurisdiction. And the mother cannot consent to something that is illegal.