4.2 Personal Knowledge

Key Takeaways

  • Personal knowledge means familiarity arising from dealings sufficient to provide reasonable certainty of identity
  • A single introduction, a one-time meeting, or hearsay from a mutual friend never establishes personal knowledge
  • When personal knowledge is used, no identification document is required from the signer
  • The certificate uses "personally known to me" and the journal records the method as personal knowledge
  • Falsely claiming personal knowledge of an impostor is grounds for revocation and civil liability
Last updated: June 2026

Defining Personal Knowledge

Personal knowledge is the first method of satisfactory evidence listed in HRS §456-1.6, and it is the only one that requires no identification document at all. The statutory touchstone, echoed in Hawaii's remote-notary provisions, is that the notary knows the individual through dealings sufficient to provide reasonable certainty that the individual has the identity claimed. The key words are dealings (plural, ongoing) and reasonable certainty (a high bar, not a guess). Recognition by face alone, or a name supplied by someone else, falls short.

What Qualifies and What Does Not

Establishes personal knowledgeDoes NOT establish it
A sibling or parent you have known for yearsSomeone introduced to you minutes ago
A neighbor you have interacted with regularlyA "friend of a friend" you just met
A coworker you see and deal with dailyA person whose name a mutual contact supplied
A long-standing client of your businessA one-time customer at a counter

The Reasonable-Certainty Test

Before relying on personal knowledge, a notary should be able to answer yes to each of these:

  1. Do I know this person from repeated, real dealings over time, not a single encounter?
  2. Do I recognize this individual by appearance without prompting?
  3. Do I have no doubt that the name on the document belongs to this person?
  4. Is my belief independent — not based on what another person told me?

If any answer is no, the notary must fall back to a qualifying ID or a credible witness. There is no penalty for switching methods, and using an ID when personal knowledge is shaky is the cautious, defensible choice.

Worked Scenario

Suppose your sister-in-law of twelve years asks you to notarize her acknowledgment on a quitclaim deed. You have shared holidays and family events for over a decade and recognize her instantly. Personal knowledge clearly applies; you need not ask for her driver's license. Contrast this with a man who walks in saying, "Your coworker Lani told me to come — she'll vouch I'm Mr. Akana." That is hearsay, not personal knowledge. You must either identify him with a qualifying ID or have Lani appear and serve as a credible witness under oath (see Section 4.3).

Documenting Personal Knowledge

When personal knowledge is the basis of identification, two records reflect it:

RecordEntry
Notarial certificateWording such as "personally known to me" or "known to me to be the person described"
Notary journalMethod recorded as "personal knowledge" rather than an ID type/number

Because no ID number or expiration can be logged, the journal entry's identity field simply states the method. Optionally noting the relationship (e.g., "sister-in-law, known 12 years") strengthens the record if the act is ever challenged.

Personal Knowledge vs. Credible Witness

Students frequently confuse the two relationship-based methods. The distinction is who knows the signer:

Personal knowledgeCredible witness
The notary knows the signerA third party knows the signer
No ID needed from the signerThe witness must be identified by the notary
Notary takes full responsibilityWitness swears an oath as to identity

The Liability Trap

The danger of personal knowledge is over-claiming it. Asserting that you "personally know" someone you merely met is a false certification — if that person turns out to be an impostor, the notary faces commission revocation and personal civil liability for any fraud the notarization enabled. The exam-safe rule: when in doubt, ask for ID. Personal knowledge is a privilege reserved for genuine, long-standing familiarity, not a shortcut to skip checking a license.

Why Personal Knowledge Is Both Strongest and Riskiest

Personal knowledge is considered the strongest form of identification because it relies on the notary's direct, accumulated familiarity rather than a document that could be forged. Yet it is simultaneously the riskiest for the notary, precisely because there is no document to fall back on. With an ID, the notary can point to the credential examined; with a credible witness, the notary can point to a sworn oath. With personal knowledge, the only evidence is the notary's own certification. If that certification is wrong, the notary stands alone.

Boundary Cases

A few situations sit on the boundary and frequently appear as test items:

SituationPersonal knowledge?
A regular client of five years whose name you have always knownYes
A relative you have not seen since childhood and barely recognizeNo — recognition is doubtful
A coworker you know only by a nickname, never the legal nameNo — you must know the identity claimed on the document
A famous public figure you have never personally dealt withNo — fame is not personal dealings

The nickname case is instructive: personal knowledge must connect the legal name on the document to the person before you. Knowing someone socially as "Kimo" does not establish that he is the "James K. Lee" named in the deed unless your dealings have confirmed that legal identity.

Interaction with the Other Methods

Personal knowledge can also operate within the other two methods. When you identify a credible witness (Section 4.3), you may do so by your personal knowledge of that witness. And in a remote online notarization (Section 4.4), personal knowledge of the remote signer remains a valid basis even though the appearance is by video. In every context the standard is identical: dealings sufficient to provide reasonable certainty of the identity claimed.

Exam Anchors

Lock in three ideas for Section 4.2: personal knowledge requires ongoing dealings, not a single meeting or hearsay; it is the only method needing no document; and the certificate phrase is "personally known to me." When the relationship is thin or the recognition uncertain, the disciplined notary steps back to a qualifying ID or a credible witness rather than over-claiming a familiarity that does not exist.

Test Your Knowledge

Personal knowledge as satisfactory evidence of identity requires that the notary:

A
B
C
D
Test Your Knowledge

A man you have never met arrives and says your coworker can vouch that he is the signer named in the deed. What is the correct identification path?

A
B
C
D