Key Takeaways

  • Personal knowledge means familiarity over time sufficient to eliminate every reasonable doubt about identity
  • Examples include longtime coworkers, relatives known all your life, or childhood friends
  • Casual acquaintance or recent introduction does NOT qualify as personal knowledge
  • The notary must be prepared to testify in court that they personally knew the signer
  • When in doubt, request identification even from people you know
Last updated: January 2026

Personal Knowledge

Utah law allows notaries to identify signers through "personal knowledge" as an alternative to documentary identification. However, this standard requires more than casual acquaintance.

Definition of Personal Knowledge

Utah Code defines personal knowledge as:

"Familiarity with an individual resulting from interactions with that individual over a period of time sufficient to eliminate every reasonable doubt that the individual has the identity claimed."

Key Elements

ElementMeaning
FamiliarityYou know the person directly
Interactions over timeNot a recent introduction
Eliminate reasonable doubtYou are certain of their identity
Court testimonyYou could swear to their identity

Examples of Personal Knowledge

Acceptable Personal Knowledge

RelationshipWhy It Qualifies
Long-term coworkerDaily interactions over extended period
Close family memberKnown since birth or for many years
Childhood friendLong history of interaction
Long-term neighborYears of regular interaction

NOT Personal Knowledge

RelationshipWhy It Does NOT Qualify
New coworkerInsufficient time for familiarity
Friend of a friendNo direct personal relationship
Someone you just metNo interactions over time
Celebrity you recognizeRecognition is not personal knowledge
Customer you see occasionallyInsufficient familiarity

The Court Test

When deciding if you "personally know" someone, ask yourself:

"Could I stand in a court of law and swear under oath that I personally know this person and am certain of their identity?"

If you hesitate, request identification.

When to Request ID Anyway

Even if you believe you personally know someone, consider requesting ID when:

  • You haven't seen them in a long time
  • Their appearance has changed significantly
  • The transaction is high-value or high-risk
  • You have any doubt about their identity
  • It's a formal or official document

Documenting Personal Knowledge

When relying on personal knowledge, your journal entry should note:

  • "Identified by personal knowledge" rather than an ID description
  • Your relationship to the signer (if appropriate)
  • Be prepared to explain the basis for your knowledge

On the Exam

  • Definition: Familiarity over time eliminating reasonable doubt
  • Not sufficient: Casual acquaintance, recent meeting, celebrity recognition
  • Court test: Could you testify under oath?
  • When in doubt: Request identification
Test Your Knowledge

Which of the following would NOT qualify as "personal knowledge" under Utah law?

A
B
C
D
Test Your Knowledge

What is the "court test" for personal knowledge?

A
B
C
D