Study guide
Correctly identifying the person in front of you is arguably the single most important safeguard a notary provides, since it is the barrier between legitimate transactions and identity fraud. This chapter covers what counts as satisfactory evidence of identity, when credible witnesses may be used instead, and the practical judgment calls notaries face with unusual documents, injured signers, or suspicious behavior.
Satisfactory Evidence and Personal Knowledge
Before performing almost any notarial act, a notary must be reasonably satisfied that the person appearing is who they claim to be. Most states describe two general paths to this assurance: personal knowledge and satisfactory evidence. Personal knowledge means the notary actually knows the signer well enough, through ongoing personal association, to be confident of their identity without needing a document at all — think of a notary who has known a neighbor for a decade. This path is used far less often than identification documents, and some notaries choose to rely on it rarely, since it depends entirely on the notary's own judgment and memory rather than a verifiable record. Satisfactory evidence, the far more common path, generally means identification through a current government-issued identification document bearing the signer's photograph, physical description, and signature, or through the sworn statements of one or more credible witnesses who do know the signer personally. The exact list of acceptable documents and the number of credible witnesses required varies by state, so this is an area where a notary should know their own state's specific rule rather than assume a national standard. The underlying principle taught across nearly every state's training, though, is the same: the notary's certification that a signer appeared and executed a document is only as trustworthy as the identification process behind it. A notary named Simone meeting a first-time client, Andre, would typically ask for a current photo ID rather than rely on personal knowledge, precisely because she has no prior relationship with him to draw on.
Acceptable Identification Documents
Across most states, acceptable identification documents share common features: they are current or issued within a recent period, they are issued by a government agency (state or federal, and in some cases another recognized government body), and they include a photograph, a physical description, and the bearer's signature. Typical examples widely accepted include a state-issued driver's license or identification card, a U.S. passport or passport card, and often a military identification card. Some states extend acceptance to certain other government-issued cards, such as a permanent resident card, in specific circumstances. An expired identification document is typically not acceptable, though some states allow a document expired within a short grace period; a notary should treat an obviously expired ID as insufficient absent clear state authorization otherwise. A notary should also physically examine the document: compare the photograph to the person in front of them, check the physical description, and look for any signs of tampering, such as mismatched fonts, a photograph that appears reglued, or lamination that looks disturbed. Because acceptable-document lists and expiration tolerances genuinely differ from state to state, hedge your own understanding as "in most states" rather than treating any single list as universal. A notary named Priya presented with a signer's out-of-state driver's license would generally still accept it, since most states accept other U.S. states' current driver's licenses, but she would examine it just as carefully as an in-state ID, comparing photo, signature, and physical details before proceeding.
Credible Witness Identification
When a signer has no acceptable identification document — perhaps their wallet was stolen, or they simply never obtained one — most states allow identification through one or two credible witnesses instead. A credible witness is a person who personally knows the signer, can vouch for the signer's identity under oath or affirmation, and who is themselves either personally known to the notary or able to present their own satisfactory identification. Many states require two credible witnesses when neither witness is personally known to the notary, but allow just one credible witness if that witness is personally known to the notary; this one-versus-two structure is a frequently tested distinction, though the exact threshold and rules vary by state. Critically, a credible witness cannot simply say "I believe this is John"; in most states the witness must take an oath or affirmation swearing that the signer is who they claim to be, and the notary typically records the witness's identifying information in the journal alongside the signer's. A credible witness also generally cannot be a party to the document being notarized, since a witness with a personal stake in the transaction undermines the independence the safeguard is meant to provide. Picture a notary named Terrence asked to notarize a power of attorney for a signer, Ruth, who lost her purse containing her only ID the day before. If Terrence does not personally know Ruth, he would typically need two people who do know her, each willing to swear to her identity and each presenting their own identification, before he could proceed.
Fraud Red Flags and Personal Appearance
Personal appearance is a foundational and virtually universal notary requirement: the signer must physically stand before the notary at the time of the notarial act. A notary cannot notarize a signature over the phone, from a mailed-in document, or based on a signer's promise to "stop by later" to confirm — the entire safeguard depends on the notary directly observing the person, checking identification against the face in front of them, and watching the signing or the oath happen in real time. Most states have now adopted remote online notarization procedures using audio-video technology under specific statutory conditions, but a notary may use them only if commissioned or registered for remote notarization under their own state's rules; outside those procedures, personal appearance means physical presence, and the exam expects the traditional in-person standard as the baseline concept. Beyond the appearance requirement, notaries are trained to watch for fraud red flags: a signer who seems uncertain of their own name or address, identification that looks altered or does not match the person's apparent age, a signer who appears coerced, confused, intoxicated, or under obvious duress, unusual pressure from a third party hovering nearby, or a document where key terms were altered after the signer supposedly agreed to them. A notary who notices such signs is generally expected to pause, ask clarifying questions, and, if genuine doubt about identity, willingness, or capacity remains, decline to notarize rather than proceed and hope for the best. A notary named Yusuf who sensed that a signer was being pressured by someone standing just outside the office door, for instance, would be acting well within his role to ask that person to step further away, or to reschedule the notarization if his doubts about voluntariness did not resolve.
Special Signer Circumstances
Certain signer circumstances call for extra care beyond the standard identification routine. A signer who is incarcerated may still be notarized in many states, but typically only after the notary follows facility security procedures and confirms identity through whatever documentation the facility can provide, since incarcerated individuals rarely carry a driver's license on them. A signer who is hospitalized or in a care facility presents mobility and capacity questions: the notary may need to travel to the bedside, and should assess, as with any signer, whether the person appears to understand what they are signing and is acting willingly — capacity to understand the transaction is a related but distinct concern from identity, and a notary who doubts a signer's capacity should decline just as readily as when doubting their identity. A signer with a physical disability that prevents a standard signature may use signature by mark, discussed in the prior chapter, with the appropriate additional witnesses. A non-English-speaking signer raises a different concern: because a notary generally cannot translate or explain the document's contents without risking the unauthorized practice of law, most guidance recommends the notary confirm through direct communication, or a neutral interpreter, that the signer understands they are entering a notarial act, while leaving explanation of contents to the signer's own attorney or translator. In every one of these situations, the underlying rule does not change — satisfactory evidence of identity and genuine personal appearance are still required — but the notary must adapt how those requirements are documented and confirmed.
Key terms
- Personal knowledge
- — Identifying a signer through the notary's own prior, ongoing personal familiarity with them, without relying on an identification document.
- Satisfactory evidence
- — The identification standard met through an acceptable government-issued ID or through credible witness testimony.
- Credible witness
- — A person who personally knows a signer lacking acceptable ID and who swears under oath or affirmation to the signer's identity.
- Personal appearance
- — The requirement that a signer physically stand before the notary at the time of the notarial act.
- Physical description
- — Identifying details such as height, weight, or eye color included on many acceptable identification documents.
- Capacity
- — A signer's apparent ability to understand the nature of the transaction and act willingly, assessed separately from identity.
- Remote online notarization
- — A statutorily authorized procedure, in states that permit it, allowing identification and signing via audio-video technology instead of in-person appearance.
- Duress
- — Pressure or coercion on a signer that can invalidate the voluntariness a notarial act is meant to confirm.
- Expired identification
- — An identification document past its stated validity date, generally not acceptable as satisfactory evidence absent specific state allowance.
- Interested party
- — A person with a personal stake in a document's transaction, generally disqualified from serving as that document's credible witness.
Exam tips
- Know the general one-witness-if-known, two-witnesses-if-unknown structure for credible witnesses, but expect exam wording to hedge with "in most states."
- Personal appearance is a near-universal rule — treat any question implying phone or mail notarization as describing a violation, unless remote online notarization is explicitly authorized.
- Credible witnesses must be disinterested — a party to the document cannot serve as a witness to identity.
- When identity or capacity is in doubt, the correct exam answer is almost always to decline or pause, not to proceed and note the doubt in the journal.
- Distinguish identity (who is this person) from capacity (do they understand what they're signing) — both can independently justify declining.