Passkeys for banking reduce friction without weakening auth

At a glance

What this is: This is a banking-focused analysis of passkeys showing they can improve login completion and reduce exposure to common credential attacks while requiring careful rollout across onboarding, sign-in, and recovery.

Why it matters: It matters because authentication changes in regulated consumer environments affect fraud resistance, user experience, and lifecycle governance for human identities, with lessons that also map to broader identity programmes.

By the numbers:

• The passkey completion rate is 93%.
• The average time it takes for an end-user to complete an MFA is about 31.2 seconds.

👉 Read OneSpan's discussion of passkeys for banking and phased adoption

Context

Passkeys are a phishing-resistant authentication method that replaces shared secrets with public key cryptography and user presence on the device. In banking, the issue is not whether authentication is modern enough, but whether the programme can move users from familiar password and MFA habits without creating recovery gaps or abandonment.

The primary IAM question is human identity lifecycle, not just login technology. Banks need to align passkey onboarding, step-up sign-in, account recovery, and fallback methods so the control improves both security and completion rates rather than trading one problem for another.

Key questions

Q: How should banks roll out passkeys without disrupting customer access?

A: Banks should phase passkey rollout by platform, region, or customer segment and keep existing methods available during transition. The important control is not forcing universal adoption on day one, but proving that enrollment, sign-in, and recovery all work reliably before expanding coverage.

Q: Why do passkeys matter more in banking than in many other apps?

A: Banking combines high-value accounts, repeated login events, and strong attacker incentive, so password replay, phishing, and adversary-in-the-middle attacks are especially costly. Passkeys reduce those attack paths while also improving completion, which makes them useful in a channel where friction directly affects secure access.

Q: What breaks when passkey recovery is not governed properly?

A: The programme falls back to the weakest legacy recovery path, which attackers often target first. If help-desk verification, device replacement, or fallback login is inconsistent, the user can still be phished or socially engineered even when the primary login is passkey-based.

Q: What is the difference between passkeys and traditional MFA in practice?

A: Passkeys remove shared secrets and bind authentication to the device, while traditional MFA often adds a second factor on top of a password. In practice, that means passkeys can reduce phishing and replay risk, but only if banks also manage recovery and coexistence carefully.

Technical breakdown

Passkeys and phishing-resistant authentication

Passkeys use a key pair where the private key stays on the user’s device and the public key is registered with the service. Because the credential is origin-bound, a phishing site cannot replay it the way it can with passwords or OTP codes. The browser and operating system also enforce user presence, which means the authentication event is tied to a real device interaction rather than a shared secret that can be copied. In banking, that matters because the dominant consumer attack patterns still revolve around credential theft and replay, not deep protocol compromise.

Practical implication: treat passkeys as a phishing-resistant control, but only if the banking journey removes fallback paths that reintroduce shared-secret exposure.

Completion rate, latency, and the economics of login

Authentication is not only a security control, it is a conversion path. The discussion highlights a practical difference between MFA and passkeys: fewer steps, lower latency, and better completion once users adopt the pattern. That matters in banking because repeated logins, session timeouts, and transaction checks can turn small usability costs into measurable abandonment. Security teams should think in terms of completion rate, step count, and recovery success rather than assuming stronger authentication automatically means slower user experience.

Practical implication: instrument sign-in completion, median time-to-authenticate, and recovery success before expanding passkey deployment.

Why banks need coexistence and phased rollout

A passkey programme in a large consumer bank rarely replaces all methods at once. Legacy populations, device diversity, regional differences, and account recovery constraints mean coexistence is part of the architecture, not a temporary inconvenience. The operational question is how to stage adoption so that passkeys become the default without breaking access for customers who are not ready, cannot enroll, or need an alternate path. This is a lifecycle governance problem as much as an authentication one, because enrollment, fallback, and recovery all affect who can access the account and under what conditions.

Practical implication: phase rollout by platform, region, or channel, and design explicit fallback governance before broad customer migration.

Breaches seen in the wild

• Shai Hulud npm malware campaign — Shai Hulud campaign: npm malware exposed secrets on GitHub.
• Reviewdog GitHub Action supply chain attack — reviewdog/action-setup GitHub Action supply chain attack exposed secrets.

Read our 52 NHI Breaches Analysis report for a comprehensive view of breaches impacting Non-Human Identities including AI Agents.

NHI Mgmt Group analysis

Passkeys solve a human authentication problem, not an identity governance problem. They reduce phishing, stuffing, and adversary-in-the-middle exposure, but they do not remove the need to govern enrollment, recovery, fallback, and channel coexistence. In banking, the security gain is real only when the operating model treats passkeys as part of the access lifecycle rather than a simple credential swap. The practitioner conclusion is that authentication modernization must be governed end to end, not deployed as a point control.

Login friction is now a board-level security variable because it shapes control adoption. The discussion puts completion rate and time-to-authenticate on the same plane as resistance to attack. That is the correct framing for consumer IAM because a control that users abandon at scale becomes weaker in practice, even if it is stronger on paper. Banks should measure friction as a security metric, not just a UX metric, because adoption determines whether the control has real coverage. The practitioner conclusion is that usability is part of enforcement.

Recovery path fragility: passkeys are only as strong as the weakest fallback path, and that is where most banking programmes will fail first. If account recovery still relies on legacy knowledge factors, weak help-desk processes, or inconsistent device replacement rules, the programme inherits the old risk model. That failure mode is more important than the passkey itself because attackers target the path of least resistance. The practitioner conclusion is to govern recovery with the same rigor as primary authentication.

Phased adoption is the only realistic operating model for consumer banking authentication. The article’s rollout advice reflects a broader governance truth: large-scale identity change fails when it assumes uniform readiness across devices, geographies, and customer segments. Passkeys may become the default, but defaults in banking are earned through evidence, not declaration. The practitioner conclusion is to treat staged adoption as a control validation process, not a compromise.

From our research:

• 72% of organisations have experienced or suspect they have experienced a breach of non-human identities, according to The 2024 ESG Report: Managing Non-Human Identities.
• Enterprises that have experienced a compromised NHI averaged 2.7 separate incidents in the past 12 months.
• Forward-looking programmes should pair that exposure with Ultimate Guide to NHIs , Lifecycle Processes for Managing NHIs to govern enrollment, rotation, and offboarding.

What this signals

Passkey programmes will increasingly be judged on lifecycle performance, not just cryptographic strength. For banking teams, that means enrollment failure, recovery abuse, and fallback persistence will matter as much as phishing resistance because those are the points where human identity governance still breaks down.

Recovery path fragility: the strongest primary authentication method still fails if the alternate path is ungoverned. That is why passkey adoption should be measured alongside account recovery success, device replacement rules, and help-desk controls rather than in isolation.

Consumer IAM teams should expect passkeys to become the default authentication pattern in high-friction sectors, but only where rollout is staged and customer behaviour is actively managed. The governance question is no longer whether passkeys work, but whether the organisation can make them the stable normal without weakening recovery and support processes.

For practitioners

• Design the full passkey journey Map onboarding, sign-in, and account recovery as one control chain. If any step still depends on a weaker fallback, the programme inherits that weakness and customers will route around the new control.
• Phase adoption by channel and region Start with one platform or one geography and use the results to validate completion rate, latency, and help-desk impact before broadening scope. Mobile-first rollout is often the easiest path in consumer banking.
• Keep a governed fallback strategy Allow coexistence with passwords, MFA, or other methods while passkey adoption matures, but set explicit conditions for when each alternative is used and when it is retired.
• Measure sign-in success as a security KPI Track completion rate, average authentication time, and abandonment by device type so you can see whether the passkey experience is actually better than the methods it replaces.

Key takeaways

• Passkeys reduce the most common consumer authentication attack paths, but they do not eliminate the need to govern enrollment, recovery, and fallback.
• In banking, user completion rate and authentication time are security signals, not just UX metrics, because adoption determines real control coverage.
• The most common failure mode is not the passkey itself, but an ungoverned recovery path that preserves legacy risk under a new authentication layer.

Key terms

• Passkey: A passkey is a phishing-resistant login method based on public key cryptography. The private key stays on the user’s device, while the service stores only the public key, so the secret cannot be reused, replayed, or copied in the way passwords and codes can.
• Phishing-resistant authentication: Phishing-resistant authentication is a control designed so that a user cannot easily be tricked into handing credentials to an attacker. It binds the login ceremony to the real service origin and to device-held secrets, which reduces replay and adversary-in-the-middle abuse.
• Account recovery: Account recovery is the process that restores access when a user loses a device, forgets a factor, or fails an authentication step. In identity governance, recovery is a control surface, not an afterthought, because weak recovery often becomes the easiest route around strong primary authentication.
• Sign-in completion rate: Sign-in completion rate is the share of users who reach the login page and successfully finish authentication. It is a practical measure of control usability and coverage, and in consumer banking it often determines whether a security method becomes the default or is abandoned.

Deepen your knowledge

Passkeys, phishing-resistant authentication, and consumer identity lifecycle governance are core topics in our NHI Foundation Level course, the industry's only accredited NHI security programme. If you are building a banking authentication programme that has to balance security, recovery, and adoption, it is worth exploring.

This post draws on content published by OneSpan: Passkeys for banking, a conversation with CyberRisk TV Compliance. Read the original.