How should organisations decide whether to prioritise passkeys over passwords?

Organisations should prioritise passkeys when they want stronger authentication with less user friction and a cleaner path toward passwordless access. Passkeys use device based proof of identity instead of shared secrets, which reduces reliance on passwords and can improve privacy. The decision depends on how well teams can integrate them into existing authentication flows.

What organisations should evaluate before choosing passkeys first

Passkeys are not just a nicer login experience, they change the authentication model. The practical question is whether your organisation is trying to remove shared secrets, reduce phishing exposure, and lower password support burden without breaking critical workflows. That means the decision should start with your current sign-in architecture, recovery model, device posture, and how many applications still depend on passwords or legacy federation.

A strong way to test fit is to ask whether your highest-value user journeys can tolerate a device-bound authenticator and whether your help desk can support recovery without recreating password weakness through fallback paths. If the answer is yes, passkeys usually deserve priority because they improve both security and usability. If not, passwords may remain necessary for some segments while you phase in passkeys where they create immediate value.

Teams often underestimate that the real blocker is rarely the cryptography, it is the surrounding identity process. Registration, account recovery, device loss, and cross-platform access all need clear design choices. Where those flows are weak, a passkey deployment can shift risk rather than remove it, especially if users are quietly sent back to password reset or SMS-based recovery when the primary path fails.

Where passkeys create a better security outcome than passwords

Passkeys are strongest when the organisation wants to reduce credential phishing, replay risk, and password reuse across services. Because the private key stays on the user device and authentication depends on possession plus local unlocking, the attacker no longer gets a reusable shared secret to harvest from a login page or reuse elsewhere. That makes passkeys especially compelling for internet-facing access, high-value workforce accounts, and customer identities that face phishing pressure.

They also improve the operating model for support and compliance. Passwords tend to create a steady stream of resets, lockouts, and weak recovery questions, all of which consume time and introduce exceptions. Passkeys can simplify user experience while raising the floor on authentication assurance, provided the enrolment and recovery process is itself well governed. For organisations trying to modernise authentication without adding more friction, this is often the decisive advantage.

If you want a broader identity reference point for the weaknesses passkeys are trying to remove, NHI Mgmt Group’s Ultimate Guide to NHIs is useful for understanding how credential sprawl, visibility gaps, and unmanaged secrets create long-lived exposure patterns. The same logic applies here, even though the subject is human authentication rather than non-human identity.

Where the decision should stay conservative

Organisations should be cautious when they have large legacy estates, shared kiosks, high rates of unmanaged devices, or applications that still rely on password-centric protocols. In those environments, passkeys may be the preferred target state, but not every user segment can move at the same pace. A hybrid period is normal, and the key is to avoid making the fallback channel the real primary control.

Risk also rises if recovery is poorly designed. If a lost device can be replaced only by a weak support process, then the organisation may improve front-door security while leaving the back door easier to abuse. The right decision is therefore not “passkeys or passwords” in the abstract, but “which populations can safely be moved now, and which require staged adoption with stronger recovery controls first.”

For governance and rollout planning, the most relevant control logic is consistent with CIS Controls v8, especially where account management and access control need to be tightened as authentication changes. In practice, that means treating passkeys as part of a broader authentication programme rather than a point solution.

Risk and Threat Considerations

Passkeys reduce several common password attack paths, but they do not eliminate identity risk. A compromised device, a weak account recovery process, or a poorly implemented fallback path can still allow an attacker to reach the account. The main threat shift is from password theft and reuse toward device compromise, recovery abuse, and flow manipulation.

Failure mechanism: Organisations deploy passkeys for primary login but leave password reset, help desk verification, or legacy authentication enabled as an easier route in. Attackers then target the weakest remaining path rather than the passkey itself, which defeats most of the security gain.

Impact: The account may still be phished, socially engineered, or recovered by an attacker even after passkey rollout. That creates a false sense of security, and it can be especially damaging if the organisation removes password-focused monitoring without equally strengthening recovery monitoring and exception handling.

Standards & Framework Alignment

This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.

CIS Controls v8, NIST CSF 2.0 and NIST Zero Trust (SP 800-207) set the technical controls, while ISO/IEC 42001:2023 define the regulatory obligations.

Framework	Control / Reference	Relevance
CIS Controls v8	6 — Access Control Management	Passkey rollout changes account access control and fallback authentication paths.
	5 — Account Management	Passkey adoption depends on accurate account lifecycle and recovery handling.
Recommendation — Tighten account access paths and remove weak fallback authentication during passkey adoption. Standardise account enrolment, recovery, and deprovisioning around the new authentication method.
NIST CSF 2.0	PR.AA — Identity Management, Authentication and Access Control	Passkeys are an authentication control choice that directly affects assurance and access decisions.
	PR.DS — Data Security	Passkeys help protect access to sensitive systems by reducing password exposure and replay risk.
Recommendation — Use PR.AA to align authentication strength with user risk and application criticality. Protect sensitive access paths by reducing exposure to reusable secrets.
NIST Zero Trust (SP 800-207)	3 — SISA, access decisions and trust evaluation	Passkeys fit zero trust access decisions that prefer stronger, continuous trust signals over shared secrets.
Recommendation — Require stronger trust signals before granting access to critical services.
ISO/IEC 42001:2023	5.2 — Policy for AI system governance	No

Practitioner Guidance

What to prioritise: Prioritise passkeys first for populations where phishing resistance and reset reduction matter most, such as employees with access to sensitive systems, administrators, and high-friction customer sign-in flows. Those groups usually justify the integration effort fastest.

What to verify: Verify that recovery, device replacement, and step-up authentication are as strong as the passkey flow itself. If any fallback path is materially weaker, it should be treated as part of the rollout scope, not as a separate later improvement.

Decision rule: If an application or user segment can support passkeys without forcing insecure fallback behaviour, move it ahead of passwords. If it cannot, keep passwords only as a transitional control and set a firm plan to retire them where possible.

Practitioner takeaway: Passkeys should be prioritised where they remove real attack surface, but the success of the decision depends less on the passkey itself than on whether the organisation can redesign recovery and legacy fallback without reintroducing password weakness.