Identification establishes a new proof of who someone is, usually through evidence gathering and verification. Authentication confirms that a previously established identity is still present for a later transaction. In notary services, confusing the two can produce legal reliance on a check that was never strong enough to begin with.
Why identification and authentication are not the same step
Identification is the act of establishing or asserting a specific identity claim, usually by collecting evidence and matching it to a person or organisation. Authentication is the later check that the same identity is still present at the moment of the transaction. In digital notary workflows, that distinction matters because a weak identification step can make every later authentication step look more trustworthy than it really is.
Good notary design treats identification as the onboarding or proofing problem and authentication as the recheck problem. The first answers, “Who is this party?” The second answers, “Is this the same party we already established?” That separation is important when a workflow spans registration, remote witnessing, signature ceremony, and later audit review.
Where teams blur the two, they often overvalue a login event, one-time code, or session reuse as proof of legal identity. That is a category error. A strong login can prove control of a credential, but it does not by itself prove that the underlying identity was vetted to the standard the notarial act requires.
How the distinction affects digital notary workflow design
Digital notary workflows usually need both steps, but not for the same purpose. Identification belongs at the point where the platform decides whether the signer can be admitted into the process and under what level of assurance. Authentication belongs at the point where the platform confirms continuity of presence before a notarial action, especially if the ceremony is delayed, interrupted, or resumed on another device.
This means the workflow should preserve evidence of both events separately. Identification evidence may include document checks, identity-proofing outcomes, credential binding, and reviewed assertions. Authentication evidence may include the method used at signing time, the strength of the session check, and whether step-up verification occurred for a higher-risk action. The workflow is more defensible when those records are not collapsed into a single “verified user” label.
For remote and hybrid notarisation, the operational question is not only whether the platform can authenticate a returning user, but whether it can tie that authentication to a previously established identity with enough confidence for legal reliance. That is why practitioners should read platform assurances carefully, especially where a system markets “verification” without distinguishing proofing from sign-in.
Current identity guidance draws this line clearly in a NIST SP 800-63 Digital Identity Guidelines, which separates identity proofing from authentication and treats assurance as a layered problem rather than a single event.
What goes wrong when notary teams confuse them
Confusion usually shows up as overreliance on the wrong control. A workflow may accept a successful authentication event as if it were full identity proofing, even when the account was created with weak enrollment, recycled credentials, or poor recovery controls. That creates legal and operational exposure because the notarised act rests on an identity foundation that was never strong enough.
It also creates fraud pathways. If an attacker can take over an already established account, the platform may authenticate the attacker as if they were the legitimate party. The notary may see a valid session while the real weakness is earlier in the lifecycle, at registration, recovery, or account takeover prevention. That is why the control problem is broader than “did the user log in?”
For practitioners, the difference is visible in incident response too. If a signing event is challenged, the relevant question is whether the person was properly identified at enrolment, not merely whether they authenticated later. If the only evidence is a login record, the workflow may be defensible technically but weak legally.
Identity proofing and stronger authentication are both part of a sound sign-in model, and the broader control concern is reflected in RFC 8705: OAuth 2.0 Mutual-TLS Client Authentication and Certificate-Bound Access Tokens, which shows how stronger client authentication can bind a later transaction to a specific credential rather than an unexamined session.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
NIST SP 800-63, NIST SP 800-53 Rev 5 and OWASP ASVS set the technical controls, while ISO/IEC 27001:2022 defines the regulatory obligations.
| Framework | Control / Reference | Relevance |
|---|---|---|
| NIST SP 800-63 | Digital Identity Guidelines | Separates identity proofing from later authentication assurance in notarised workflows. |
| Recommendation — Map proofing and authentication to different evidence requirements and assurance decisions. | ||
| NIST SP 800-53 Rev 5 | IA-8 — Identification and Authentication (Non-Organizational Users) | Covers external parties whose identity must be established before access or signing. |
| Recommendation — Use IA-8 to require stronger identity proofing for external signers. | ||
| OWASP ASVS | V6 — Authentication | Supports the transaction-time sign-in controls used in remote notary flows. |
| Recommendation — Verify that authentication strength matches the risk of the notarial action. | ||
| ISO/IEC 27001:2022 | A.5.16 — Identity management | Addresses identity lifecycle and authoritative identity records supporting notarisation. |
| Recommendation — Maintain authoritative identity records and lifecycle controls for signers. | ||
Practitioner Guidance
What to verify: Confirm that the workflow documents identity proofing separately from transaction-time authentication, and that each step has its own evidence trail. If your system cannot show when identity was established, what standard was used, and what later authentication proved, the notarial record is likely too thin for high-stakes reliance.
Decision rule: If the control only proves possession of an account, token, or device, treat it as authentication evidence, not identification evidence. If the notary act depends on legal identity assurance, require a proofing step with stronger enrolment controls and a separate re-authentication step at the time of signing.
What practitioners underestimate: Recovery and re-entry paths often matter more than the initial login. A weak reset, shared email, or session reuse can undermine the whole chain even when the ceremony itself looked clean.
Practitioner takeaway: In digital notary workflows, identification establishes the legal basis for trust, while authentication only confirms continuity later, so the workflow must preserve both distinctions or the record becomes harder to defend.
Related resources from NHI Mgmt Group
- What is the difference between authentication workflows and application code?
- What is the difference between badge-tap authentication and traditional repeated logins in healthcare workflows?
- What is the difference between step-up authentication and continuous fraud monitoring in digital transactions?
- What is the difference between a document signer certificate and a regular digital certificate for user authentication?