They matter because regulated programmes increasingly need phishing-resistant authentication, not just stronger passwords. Passkeys align with assurance-based guidance such as NIST SP 800-63B and fit environments that need better resistance to credential theft. The control question becomes how to document binding, recovery, and fallback paths for audit.
Why This Matters for Security Teams
For regulated industries, passkeys matter because they shift authentication away from shared secrets that are easy to phish, replay, or reissue badly. That is important when auditors expect clear evidence of assurance, recovery, and fallback controls, not just a stronger login screen. Guidance such as NIST Cybersecurity Framework 2.0 pushes teams toward risk-based identity controls, while NHIMG research shows the operational stakes: only 5.7% of organisations have full visibility into their service accounts, a reminder that identity sprawl is usually underestimated (Ultimate Guide to NHIs — Regulatory and Audit Perspectives).
The practical issue is not whether passkeys are stronger than passwords. It is whether the organisation can prove the binding between the user, the authenticator, and the relying party, and then show how exceptions are handled without weakening the control. In regulated environments, that often becomes a governance problem across IAM, PAM, helpdesk recovery, and audit evidence. In practice, many security teams encounter passkey exceptions only after an account recovery event has already created an audit gap, rather than through intentional control design.
How It Works in Practice
Passkeys are built on public-key cryptography, so there is no reusable secret for users to type or attackers to steal. For regulated programmes, that matters because the control narrative is about phishing resistance, credential lifecycle, and how access is recovered when a device is lost or an employee changes role. Best practice is to document whether the passkey is platform-bound or cross-device, who can re-enrol it, and what proof is required before fallback authentication is allowed. The strongest programmes treat recovery as a privileged workflow, not a convenience feature.
Implementation also needs to fit broader identity governance. A passkey can reduce password risk, but it does not replace Top 10 NHI Issues such as poor lifecycle control, weak offboarding, or over-broad entitlements. The same audit logic used for human access should be applied to service ownership, admin recovery, and delegated support actions. For control mapping, security teams usually anchor passkey rollout to NIST identity guidance and to the organisation’s access review cycle, then capture evidence of enrollment, revocation, and exception handling. NIST Cybersecurity Framework 2.0 is useful here because it frames identity as a measurable security outcome rather than a point product.
- Define which users and roles must use passkeys first, especially privileged and regulated accounts.
- Set recovery rules that require stronger verification than ordinary login.
- Log enrollment, device binding, revocation, and fallback events for audit.
- Review whether legacy MFA, SMS, or shared helpdesk flows remain acceptable exceptions.
These controls tend to break down when organisations allow informal support desk resets for high-risk accounts because the recovery path becomes the easiest path for attackers.
Common Variations and Edge Cases
Tighter authentication often increases recovery overhead, requiring organisations to balance user assurance against operational friction. That tradeoff is especially visible in healthcare, financial services, and public-sector environments where shared devices, union rules, or field operations make enrolment less straightforward. Current guidance suggests treating those cases as exceptions with compensating controls, but there is no universal standard for this yet. The control objective remains the same: avoid weak fallback that silently undermines the passkey programme.
Two edge cases deserve attention. First, some environments still need legacy authentication for third-party integrations or older applications. Second, device portability can create policy tension if users expect passkeys to move easily between personal and managed hardware. Regulators usually care less about the specific authenticator type and more about whether the organisation can show phishing resistance, strong identity proofing, and controlled recovery. For that reason, it is sensible to align passkey rollout with Ultimate Guide to NHIs — Lifecycle Processes for Managing NHIs, then document exceptions in the same way as other identity lifecycle decisions.
Where programmes go wrong is assuming that modern authentication automatically means compliance. Auditors will still ask who can rebind a passkey, how revoked devices are handled, and whether emergency access paths are monitored. That is why passkeys should be framed as a stronger authentication control, not as a complete identity governance strategy.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
OWASP Non-Human Identity Top 10 address the attack and risk surface, while NIST SP 800-63 and NIST CSF 2.0 set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| NIST SP 800-63 | AAL2/AAL3 | Passkeys support phishing-resistant authenticator assurance levels. |
| NIST CSF 2.0 | PR.AC-1 | Identity proofing and access control are central to passkey governance. |
| OWASP Non-Human Identity Top 10 | NHI-05 | Recovery and fallback paths can reintroduce identity risk. |
Use passkeys for phishing-resistant sign-in and document the assurance level your regulated apps require.
