The primary duty of a notary public is to verify the identities of each signer on a document. This is done to protect against fraudulent acts that may otherwise void the notarized document. The notary public typically requests each signer to provide identification that verifies their identity. If the client fails to provide an acceptable form of identification, the notary public is legally obligated to refuse the service. So, what’s considered an “acceptable” form of identification when seeking the services of a notary public?