n. a person authorized by the state in which the person resides to administer oaths (swearings to truth of a statement), take acknowledgments, certify documents and to take depositions if the notary is also a court reporter. The signature and seal or stamp of a notary public is necessary to attest to the oath of truth of a person making an affidavit and to attest that a person has acknowledged that he/she executed a deed, power of attorney or other document, and is required for recording in public records. The Secretary of State of each state appoints notaries public for a specified term of years. A notary public must see proof of identity (e.g. driver's license) of those swearing and keep an official journal of documents notarized. The authority is good only in the state which appoints the notary.

A notary public ( notary or public notary; notaries public) of the common law is a public officer constituted by law to serve the public in non-contentious matters usually concerned with general financial transactions, estates, deeds, powers-of-attorney, and foreign and international business. A notary's main functions are to validate the signature of a person (for purposes of signing a document); administer oaths and affirmations; take affidavits and statutory declarations, including from witnesses; authenticate the execution of certain classes of documents; take acknowledgments (e.