The Model Notary Act, which most states have adopted in part or in whole, requires a notary be presented with at least two acceptable forms of identity before notarizing a document. At least one form of identification should contain a recent photo.
Satisfactory Evidence
Acceptable identification can consist of a government-issued or tribal driver's license or identification card, valid passport, or official military identification card. In states where notaries are required to maintain a notary journal, the notary records the identification numbers of the evidence provided in the notary journal.
Personally Known
State notary laws and regulations usually do not require that evidence of identity of the party signing a document be presented if the notary already personally knows the identity of that party. The safer method, however, is for a notary to request appropriate evidence of identity every time a document is notarized.
Credible Witness
The Model Notary Act allows verification of a person's identity through the administration of an oath or affirmation by at least one credible witness who is personally known by the notary and the individual signing the document. The act also allows for witness verification by at least two credible and disinterested witnesses who personally know the individual and who present satisfactory identification to the notary.