The planned move from an authentication system that is being retired to a replacement that preserves user access and security controls. In practice, it includes enrolment, recovery, fallback handling, testing, and cutover governance, not just swapping one login method for another.
Expanded Definition
passkey migration is the controlled transition from an older authentication method, such as passwords, SMS codes, or legacy MFA, to passkeys based on asymmetric cryptography and device-bound or synced authenticators. In NHI and IAM programs, the term covers more than enrollment. It includes recovery design, fallback controls, policy updates, user communications, pilot testing, and cutover sequencing so that access remains stable while risk decreases. For a standards-oriented view of security outcomes, NIST Cybersecurity Framework 2.0 is useful because the migration must preserve protect, detect, and recover functions during change. Definitions vary across vendors on whether synced passkey, device-bound passkeys, or both should be considered the default target state, so governance should be explicit about acceptable authenticators and recovery paths.
The most common misapplication is treating passkey migration as a simple login replacement, which occurs when teams enable passkey enrollment without redesigning recovery, fallback, and help desk escalation.
Examples and Use Cases
Implementing passkey migration rigorously often introduces short-term support complexity, requiring organisations to weigh lower phishing exposure against a temporary increase in enrolment friction and exception handling.
- A workforce app lets users enroll passkeys gradually while password login remains available for a defined transition window.
- A privileged admin portal requires a passkey for primary sign-in, but retains tightly governed recovery through a separate identity proofing process.
- A consumer platform phases out SMS-based fallback after testing device replacement flows and account recovery prompts against real support scenarios.
- A product team validates cutover with a pilot group before global rollout, using telemetry to identify failed enrollments and broken recovery paths.
- For background context on the identity sprawl that makes migration hard, NHI Mgmt Group’s Ultimate Guide to NHIs explains why authentication changes often expose hidden dependencies across service accounts, scripts, and automation. The same governance discipline aligns with NIST Cybersecurity Framework 2.0 because transition risk must be managed as an operational security issue, not only a UX change.
Why It Matters in NHI Security
Passkey migration matters because authentication change is a common point where weak recovery, inconsistent policy, and shadow access pathways surface. In NHI-heavy environments, the same migration patterns apply to operator accounts, automation consoles, and shared admin workflows, where an incomplete transition can leave legacy credentials alive long after the new method goes live. NHI Mgmt Group reports that only 5.7% of organisations have full visibility into their service accounts, which is why migration plans must account for the identities that are easiest to miss during cutover. Good governance also requires documenting which fallback options remain acceptable, how exceptions expire, and how failed enrollments are investigated. Without that discipline, passkeys can reduce phishing risk while still leaving old authentication paths available for abuse.
Organisations typically encounter the real cost of passkey migration only after users are locked out or legacy credentials are found still active, at which point the migration becomes operationally unavoidable to correct.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
OWASP Agentic AI Top 10 and OWASP Non-Human Identity Top 10 address the attack and risk surface, while NIST SP 800-63, NIST CSF 2.0 and NIST Zero Trust (SP 800-207) set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| NIST SP 800-63 | AAL2 | Passkey assurance and verifier binding map to digital identity assurance guidance. |
| NIST CSF 2.0 | PR.AC-1 | Migration changes authentication and access control mechanisms covered by access management outcomes. |
| NIST Zero Trust (SP 800-207) | IA and continuous verification concepts | Passkey adoption supports stronger identity assurance within zero trust architectures. |
| OWASP Agentic AI Top 10 | JSON | Agent and tool access should not rely on weak or legacy credentials during auth transitions. |
| OWASP Non-Human Identity Top 10 | NHI-01 | Hidden credentials and fallback secrets often remain after migration if not governed explicitly. |
Use passkeys to strengthen user authentication while keeping continuous verification and least privilege intact.
Related resources from NHI Mgmt Group
Deepen Your Knowledge
Reviewed and updated by the NHIMG editorial team on July 11, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org
