A notary is a public official responsible for independently verifying signatures and oaths. Depending on how a document is written, a notarization serves to affirm the identity of a signer and the fact that they personally executed their signature. A notarization, or notarial act, officially documents the identity of a party to a document or transaction and the occasion of the signing that others can rely upon, usually at face value. A notary's authentication is intended to be reliable, to avoid the inconvenience of having to locate a signer to have them personally verify their signature, as well as to document the execution of a document perhaps long after the lifetime of the signer and the notary. An oath is a sworn statement. In most cases a person will swear that a written statement, oral statement, or testimony they are about to give is true. A notary can document that the notary administered an oath to an individual.