Best Answer: A notary public is a legally authorized individual who can administer oaths and witness and authenticate documents. In your case, a notary public is someone who will legally vouch for the fact that the person signing your form (you) is the person that you claim to be.They will determine this by asking you to provide one or more forms of legally acceptable identification.n your case, a notary public is someone who will legally vouch for the fact that the person signing your form (you) is the person that you claim to be.