---
url: 'https://www.corbado.com/blog/hardware-passkey-adoption-observability'
title: 'Hardware Passkey Observability: Close the UX Gap'
description: 'Hardware passkeys win on security but lose on adoption. Learn how observability closes the UX gap with synced passkeys and proves hardware passkey ROI.'
lang: 'en'
author: 'Vincent Delitz'
date: '2026-03-07T12:38:05.175Z'
lastModified: '2026-03-25T10:01:38.316Z'
keywords: 'hardware passkey observability, hardware passkey adoption, FIDO2 hardware security key UX, hardware authenticator analytics, passkey funnel analytics, WebAuthn vs CTAP observability'
category: 'Passkeys Strategy'
---

# Hardware Passkey Observability: Close the UX Gap

## Key Facts

- **Hardware passkeys** achieve **NIST AAL3**, the highest assurance level. **Synced
  passkeys** are capped at AAL2 because cloud sync makes private keys exportable.
- iOS, Android and Windows default to synced credentials, forcing hardware authenticator
  users through 3 or more additional steps to complete login.
- The FIDO Alliance Passkey Index 2025 reports consumer passkey adoption in financial
  services often stays in single digits months after hardware deployment launches.
- Without **passkey observability**, teams cannot detect NFC tap failures, **CTAP**
  handshake aborts or PIN lockouts that silently kill hardware login attempts.
- Funnel-level, session-level and device-level telemetry lets teams route away from broken
  device/OS combinations and prove hardware deployment ROI with adoption metrics.

## 1. Introduction: Hardware Passkeys are winning on Security, losing on Adoption

Let's start with clarification on terminology.

### 1.1 Terminology: Hardware Passkeys vs. FIDO2 Credentials

Throughout this article we use the term "hardware passkeys" to refer to
[FIDO2](https://www.corbado.com/glossary/fido2) credentials stored on physical security keys, NFC smart cards or
USB tokens - i.e. [device-bound passkeys](https://www.corbado.com/faq/are-passkeys-device-specific) on external
hardware. Strictly speaking, the industry sometimes calls these "device-bound
[FIDO2](https://www.corbado.com/glossary/fido2) credentials" or "hardware-bound WebAuthn credentials" because the
private key never leaves the physical device and cannot be synced. We use "hardware
passkeys" as a shorthand because it is the term many product teams and decision-makers
recognize and because the [FIDO Alliance](https://www.corbado.com/glossary/fido-alliance) itself increasingly
uses "passkey" as the umbrella term for all [FIDO2](https://www.corbado.com/glossary/fido2)-based credentials -
whether synced or device-bound. For the full technical breakdown of how WebAuthn, CTAP and
FIDO2 relate to each other, see our dedicated explainer.

### 1.2 Security Paradox

The passwordless transition has created a paradox: hardware-bound passkeys are
cryptographically stronger than software-based alternatives, yet they face a widening UX
gap that limits their mainstream adoption. Their design ensures the private key never
leaves the physical secure element, making them immune to credential manager sync
[vulnerabilities](https://www.corbado.com/glossary/vulnerability) and remote credential extraction.

Under the [NIST SP 800-63B](https://www.corbado.com/faq/nist-sp-800-63b-supplement-passkey-adoption) guidelines,
hardware-bound passkeys are one of the few mechanisms that achieve
[Authenticator](https://www.corbado.com/glossary/authenticator) Assurance Level 3 (AAL3) - requiring a
hardware-protected, isolated environment to prevent key extraction. Physical security keys
also exceed the strict SCA requirements under [PSD2](https://www.corbado.com/blog/psd2-passkeys) in Europe and
comply with the NYDFS [cybersecurity regulations](https://www.corbado.com/blog/cyber-security-compliance) in the
US.

Synced passkeys - which use the same FIDO2 public-key cryptography but allow private key
material to sync across devices via cloud infrastructure - are capped at
[NIST](https://www.corbado.com/blog/nist-passkeys) [AAL2](https://www.corbado.com/blog/nist-passkeys). Because syncing means the key can
be exported, they violate [AAL3's](https://www.corbado.com/blog/nist-passkeys) non-exportability requirements.
Despite this security gap, Apple and Google are aggressively optimizing their operating
systems to favor synced passkeys. Investments in
[conditional UI](https://www.corbado.com/glossary/conditional-ui) auto-prompts,
[iCloud Keychain sync](https://www.corbado.com/faq/private-key-sync-passkeys) and native
[Google Password Manager](https://www.corbado.com/blog/how-to-use-google-password-manager) integration have made
synced passkeys the path of least resistance.

The following diagram illustrates the core tension: hardware passkeys deliver the highest
security assurance but sit in the high-friction quadrant, while synced passkeys trade some
security for dramatically lower friction. Observability is the mechanism to move hardware
passkeys toward the goal quadrant.

### 1.3 Hardware Authenticators as "second-class Citizens"

The default UX on every modern phone and browser guides users toward built-in platform
[authenticators](https://www.corbado.com/glossary/authenticator). Hardware
[authenticators](https://www.corbado.com/glossary/authenticator) are becoming "second-class citizens" in the
login journey. To use a FIDO2 hardware key, users must dismiss biometric autofill prompts,
navigate secondary modal menus and perform physical gestures - aligning an NFC card or
inserting a USB token - that often lack clear OS guidance.

The result: even when organizations distribute hardware
[authenticators](https://www.corbado.com/glossary/authenticator) at scale to their end customers, actual usage
rates remain low. This article focuses on consumer / customer-facing authentication
(CIAM) - not workforce login. For a comprehensive overview of CIAM passkey deployments at
scale, see our enterprise guide. In CIAM scenarios like [banking](https://www.corbado.com/passkeys-for-banking),
[healthcare](https://www.corbado.com/passkeys-for-healthcare) portals or
[government](https://www.corbado.com/passkeys-for-public-sector) services, hardware keys are issued to millions
of external users who have no IT department guiding them. The
[FIDO Alliance Passkey Index 2025](https://fidoalliance.org/passkey-index-2025/) confirms
that consumer [passkey adoption](https://www.corbado.com/blog/passkey-adoption-business-case) in
[financial services](https://www.corbado.com/passkeys-for-banking) lags behind other sectors, with post-launch
enrollment often staying in single digits months after enablement. Passwords remain the
default even where hardware passkeys are fully available.

### 1.4 Why Observability is the missing Piece

The missing piece is not better hardware. It is **visibility**. Today, when a hardware
login fails, the server simply registers that no [assertion](https://www.corbado.com/glossary/assertion) was
received. It cannot tell you:

- Whether the user ever found the
  "[external authenticator](https://www.corbado.com/glossary/external-authenticator)" option in the OS modal or
  gave up at the [iCloud Keychain](https://www.corbado.com/glossary/icloud-keychain) prompt
- At which step in the CTAP handshake the NFC ceremony aborted
- Whether the failure was a timeout, a PIN lockout or a transport mismatch
- How success rates differ between the browser (WebAuthn) path and the
  [native app](https://www.corbado.com/blog/native-app-passkeys) (platform passkey API) path
- Which specific device/OS/browser combinations consistently break

Without this data, hardware manufacturers and their customers - banks,
[healthcare](https://www.corbado.com/passkeys-for-healthcare) providers,
[government](https://www.corbado.com/passkeys-for-public-sector) agencies - are guessing. They cannot quantify
the UX gap, prioritize fixes or prove ROI to justify continued investment. Real-time,
client-side observability - the kind that tracks every step from login intent to
cryptographic [assertion](https://www.corbado.com/glossary/assertion) across devices and transports - is how
hardware passkey vendors close the adoption gap. The rest of this article explains what
that observability looks like, why it matters and how it changes the business model for
hardware authentication.

## 2. Synced Passkey Momentum Problem

Apple, Google and Microsoft are optimizing their operating systems to prioritize
credential manager integration, cross-device sync and biometric auto-fill. With every OS
update, the [synced passkey](https://www.corbado.com/blog/device-bound-synced-passkeys) experience gets smoother.

WebAuthn [Conditional UI](https://www.corbado.com/glossary/conditional-ui) allows browsers to detect a passkey on
the local device and show it directly in the native autofill dropdown. The user taps their
username, authenticates via [Face ID](https://www.corbado.com/faq/is-face-id-passkey) or
[Windows Hello](https://www.corbado.com/glossary/windows-hello) and the login is complete. But while these
updates improve synced credential usability, they rarely improve - and sometimes worsen -
the flow for external hardware authenticators.

### 2.1 Friction Delta across major Ecosystems

| **Operating System**            | **Synced Passkey default UX**                                                                                          | **Hardware Passkey UX (external Authenticator)**                                                                                                                                       | **UX Friction Delta**                                                         |
| ------------------------------- | ---------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------- |
| **Apple iOS (Safari / Native)** | User taps username; iCloud Keychain biometric prompt appears; Face ID authenticates in under one second.               | In standard platform-mediated flows, users often must dismiss the iCloud prompt, tap "Other Sign-in Options", select "Security Key" and hold the key to the iPhone's top edge for NFC. | Often 3+ extra steps; external key option commonly buried in secondary menus. |
| **Google Android (Chrome)**     | Credential Manager shows a bottom-sheet with the Google Password Manager passkey; user confirms with biometric or PIN. | User must ignore the Credential Manager sheet, navigate to "Use another device or Security Key" and align the NFC card with the device's antenna (location varies by OEM).             | Obscured path; unpredictable NFC antenna placement across devices.            |
| **Microsoft Windows (Edge)**    | Windows Hello prompts for PIN or biometric tied to the local TPM.                                                      | User must bypass Windows Hello, click "Sign in with another device", select "Security Key", insert the device and enter the hardware-bound PIN (not the Windows PIN).                  | Hidden option; "Security Key" nomenclature confuses non-technical users.      |

![macos hardware passkey](https://s3.eu-central-1.amazonaws.com/corbado-cloud-staging-website-assets/macos_hardware_passkey_08acf66baf.png)
![android hardware passkey](https://s3.eu-central-1.amazonaws.com/corbado-cloud-staging-website-assets/android_hardware_passkey_0c5e852950.png)
![macos chrome hardware passkey client hints](https://s3.eu-central-1.amazonaws.com/corbado-cloud-staging-website-assets/macos_chrome_hardware_passkey_client_hints_a02bc960a7.png)

### 2.2 Challenge of OS-level Control and OEM Fragmentation

On [iOS](https://www.corbado.com/blog/webauthn-errors), the ASAuthorization framework often prioritizes
[iCloud Keychain](https://www.corbado.com/glossary/icloud-keychain) in standard platform-mediated
account-selection flows. For a consumer to use a FIDO2 [smart card](https://www.corbado.com/glossary/smart-card),
they may need to work through secondary prompts rather than the default
[Face ID](https://www.corbado.com/faq/is-face-id-passkey) path - working against the muscle memory the OS trains
into every user.

On [Android](https://www.corbado.com/blog/how-to-enable-passkeys-android), OEM fragmentation makes things worse.
While Google provides the Credential Manager framework and baseline AOSP code,
manufacturers like [Samsung](https://www.corbado.com/blog/samsung-passkeys), Xiaomi and Oppo ship heavily
modified builds. An NFC key that works perfectly on a Pixel may silently fail, show an
infinite loader or trigger an incompatible prompt on a budget
[Samsung](https://www.corbado.com/blog/samsung-passkeys) Galaxy or Oppo device. Some
[Android](https://www.corbado.com/blog/how-to-enable-passkeys-android) 14 builds have broken third-party
[passkey provider](https://www.corbado.com/blog/passkey-providers) support entirely.

The key argument: hardware vendors cannot control Apple's ASAuthorization framework or
force OEMs to standardize NFC stacks. But they can **measure** exactly where users drop
off, how long ceremonies take and which OS versions hide the hardware option - then adapt
accordingly.

## 3. Real-World Adoption Failure: what happens without Observability

The consequences of unmonitored passkey UX are not theoretical. They show up as public
operational failures.

### 3.1 Securities Firm Case Study

When large Japanese securities firm mandated passkeys for all users conducting high-risk
financial operations, the deployment was met with a flood of complaints. Search
autocomplete data revealed panicked queries like "cannot login", "want to disable passkey"
and "passkey is scary." For more context on these Japanese passkey rollouts, see our
dedicated overview.

The root causes were not cryptographic flaws but unmonitored UX breakdowns. Severe
failures emerged on non-Pixel devices running
[Android](https://www.corbado.com/blog/how-to-enable-passkeys-android) 14. Users saw opaque error codes - "M0902"
or generic "Operation interrupted" modals - without guidance or retry paths. The friction
became so bad that
[local IT support shops](https://www.sakura-agent.net/nomura-passkey-error/) started
offering paid on-site visits (¥7,700+) to help customers register and troubleshoot their
passkey setups.

### 3.2 Translating the Failure to Hardware Authenticators

The failure pattern from software passkey rollouts applies to hardware authenticators at
an even higher rate because physical variables enter the equation:

- **NFC tap Failures:** Users pull the [smart card](https://www.corbado.com/glossary/smart-card) away before the
  CTAP transmission completes, causing a silent abort.
- **PIN entry Confusion:** Users enter their phone's screen lock PIN instead of the FIDO2
  hardware PIN, triggering lockout after three attempts.
- **Cross-device handoff Breakdowns:** Cross-device authentication via BLE and QR codes
  breaks due to firewall policies, Bluetooth latency or hybrid protocol issues.

Without observability, the organization has no idea what percentage of card taps fail,
whether users find the "[external authenticator](https://www.corbado.com/glossary/external-authenticator)"
option, where the CTAP flow aborts or how browser vs.
[native app](https://www.corbado.com/blog/native-app-passkeys) success rates compare.

Any organization deploying hardware passkeys needs visibility into browser vs. app success
rates, login ceremony latency, the performance gap between software and hardware passkeys
and the frequency of PIN-related errors.

## 4. What Hardware Passkey Observability actually means

Traditional backend monitoring only tells you that an authentication attempt failed. True
observability reconstructs the full context from the client side. For hardware passkeys,
this means instrumenting three layers.

### 4.1 Funnel-level: where do Users drop off?

Funnel-level observability maps the authentication journey as a process tree. The same
approach [passkey analytics](https://www.corbado.com/blog/passkey-analytics) uses for synced flows, extended to
hardware specifics.

The critical nodes:

1. **Login attempt Initiation:** User interacts with login UI.
2. **Passkey Capability Check:** [Relying party](https://www.corbado.com/glossary/relying-party) probes the
   environment via [getClientCapabilities](https://www.corbado.com/blog/webauthn-client-capabilities)() or
   isUVPAA().
3. **Authenticator Selection:** OS modal appears; user chooses
   [synced passkey](https://www.corbado.com/blog/device-bound-synced-passkeys) or external key.
4. **Ceremony Start:** Physical connection (NFC, USB, BLE) initializes.
5. **User Verification:** User provides biometric or hardware PIN.
6. **Cryptographic Assertion:** [Assertion](https://www.corbado.com/glossary/assertion) generated and sent to
   server.
7. **Final State:** Success or failure.

Segmenting drop-off by OS, browser and device form factor reveals exactly where hardware
passkeys lose to synced passkeys.

### 4.2 Session-level: what happened to this specific User?

Session-level observability lets teams replay individual user sessions to debug support
tickets. For a hardware failure, the telemetry shows which
[authenticator](https://www.corbado.com/glossary/authenticator) was used - platform vs. cross-platform roaming -
what transport was active (NFC, USB, BLE) and which error code occurred (e.g.
`NotAllowedError` on web, `ASAuthorizationErrorCanceled 1001` on
[iOS](https://www.corbado.com/blog/webauthn-errors)).

When a support center gets the call "my customer can't tap their card to log in", you can
query the session and determine instantly whether it was a WebAuthn timeout, a revoked
credential or a PIN lockout.

### 4.3 Device-level: which Hardware/Software Combos are broken?

Device-level observability aggregates telemetry by device model, OS version, browser and
credential manager to surface systemic failures. Because Android OEMs customize NFC
stacks, battery management and biometric prompts, certain combinations are fundamentally
unreliable.

Example: NFC keys on [Samsung](https://www.corbado.com/blog/samsung-passkeys) Galaxy A series + Android 14 +
Chrome 120 might show a 40-90% ceremony abort rate. Once identified, relying parties can
implement conditional routing: "On this device, skip NFC hardware prompt - fall back to
OTP or app-based flow." This layer also tracks trends over time so vendors can detect when
an OS update breaks hardware [authenticator](https://www.corbado.com/glossary/authenticator) support.

## 5. Browser (WebAuthn) vs. native passkey APIs: why both paths need coverage

Hardware passkeys reach users through two distinct surfaces: the browser (via WebAuthn)
and native apps (via platform passkey APIs such as Apple's AuthenticationServices and
[Android's](https://www.corbado.com/blog/how-to-enable-passkeys-android) Credential Manager). For a detailed
technical comparison, see our guide on WebAuthn vs. CTAP vs. FIDO2. The key difference for
observability:

- **Browser (WebAuthn):** the [relying party](https://www.corbado.com/glossary/relying-party) yields much of the
  credential UX control to the browser and OS. Apple, Google or Microsoft dictate the
  modal, prompt hierarchy and default authenticator. Hardware keys are often buried behind
  extra clicks. [Cross-origin](https://www.corbado.com/blog/iframe-passkeys-webauthn)
  [iframes](https://www.corbado.com/blog/iframe-passkeys-webauthn) add further complexity.
- **Native app (platform passkey APIs):** the app controls more of the surrounding
  journey - screen flow, timing, retries, fallback routing and in-app guidance - but the
  actual passkey ceremony still goes through OS-managed frameworks and system UI. On
  [iOS](https://www.corbado.com/blog/webauthn-errors) this means AuthenticationServices. On Android this usually
  means Credential Manager. Native integrations also expose richer platform-specific error
  signals than browsers.

Both paths exist in production. A user might log in via Safari one day and via the native
app the next. On Android 14+, browser and native flows often converge on the same
underlying Credential Manager service, and on iOS both Safari and native apps rely on
AuthenticationServices. The difference is therefore less about a separate protocol stack
and more about entry surface, surrounding UX and error visibility. In specialized
high-assurance deployments, vendors may additionally use direct NFC, USB or BLE SDKs for
dedicated hardware tokens - but that is a separate integration model from standard native
passkey APIs.

## 6. How Observability changes the Game for Hardware Passkey Vendors

The traditional hardware authenticator business is transactional: manufacture, ship and
hope for adoption. As synced passkeys make external hardware feel less necessary, that
model breaks down. Observability enables a new approach: **sell hardware, prove adoption
and optimize continuously.**

### 6.1 Sell Adoption, not just Hardware

Organizations do not want millions of smart cards or security keys sitting unused.
Observability transforms deployment counts into ROI metrics through
[passkey analytics](https://www.corbado.com/blog/passkey-analytics) - e.g. showing that 42% of users actively
authenticate with the hardware device, up from 28% after SDK prompt optimization. That
proves the [business case](https://www.corbado.com/blog/passkey-adoption-business-case) for re-issuance, premium
pricing and expanded rollouts. Presenting this data to
[stakeholders](https://www.corbado.com/blog/passkeys-stakeholder) is critical for securing continued investment.

### 6.2 Debug faster, reduce Support Costs

When a customer support center gets flooded with "card tap not working" tickets, the
vendor needs answers fast. Without observability: weeks of blame-shifting between
firmware, app code and backend. With session-level error data: "The issue is on
[iOS 17](https://www.corbado.com/blog/apple-passkeys-integration).3 + Chrome; NFC times out after 8.5s on
iPhone 12. Here is the fix." Resolution collapses from weeks to minutes.

### 6.3 Compete with synced Passkey UX using Data

Hardware vendors cannot change Apple's [iCloud Keychain](https://www.corbado.com/glossary/icloud-keychain)
prompt. But if funnel data shows 60% of iOS browser users abandon before finding the
hardware key option, that is proof to invest in a [native app](https://www.corbado.com/blog/native-app-passkeys)
flow with better in-app guidance and tighter integration with the platform passkey APIs.
And if device intelligence shows a device fails NFC 80% of the time, the app can suppress
the hardware path earlier and route the user to the highest-success fallback. Data-driven
routing is how hardware passkeys stay competitive.

## 7. How Corbado helps: Observability for Hardware Passkey Deployments

Corbado provides the [passkey analytics](https://www.corbado.com/blog/passkey-analytics) and authentication
observability infrastructure described in this article. It works with any passkey
implementation and any identity provider - no need to replace existing auth
infrastructure.

### 7.1 Funnel Analysis across both Paths

The Corbado SDK integrates via a few lines of JavaScript (browser) or native SDKs built on
the iOS and Android passkey APIs and captures all passkey events: creation prompts,
authentication attempts, errors and timing data. Authentication flows are visualized as
multi-step funnels filtered by OS, browser, authenticator type and time range -
identifying exactly where hardware passkey users drop off compared to
[synced passkey](https://www.corbado.com/blog/device-bound-synced-passkeys) users.

### 7.2 Error Classification and Alerting

Automatic classification separates user decisions (e.g. cancelled, skipped the hardware
prompt) from system errors (e.g. NFC timeout, platform-level failures). This prevents
false alarms and lets teams focus on real breakpoints. Anomaly detection alerts you to
spikes after OS updates - before users complain.

### 7.3 Device and Authenticator Intelligence

Track hardware passkey usage across device models, OS versions, browsers and transport
types (NFC, USB, BLE). Surface toxic device/OS combinations with high abort rates. Monitor
how success rates shift after platform updates and feed that data into smart routing
decisions - suppressing hardware prompts on known-broken devices and routing to the
highest-success path.

### 7.4 Adoption Dashboards for Hardware Vendors

Provide your customers - banks, [healthcare](https://www.corbado.com/passkeys-for-healthcare) providers,
[government](https://www.corbado.com/passkeys-for-public-sector) agencies - with ongoing adoption reporting. Show
active hardware passkey utilization rates, compare browser vs. native app performance and
quantify the ROI of hardware deployments over time. This shifts the conversation from "we
shipped the cards" to "here is the measured adoption and here is how we are improving it."

## 8. Conclusion

Hardware FIDO2 authenticators are device-bound, [phishing](https://www.corbado.com/glossary/phishing)-resistant
and compliant with [NIST](https://www.corbado.com/blog/nist-passkeys) [AAL3](https://www.corbado.com/blog/nist-passkeys) and
[PSD2](https://www.corbado.com/blog/psd2-passkeys) SCA. But the UX gap with synced passkeys is real and growing.

The vendors who win will be those who prove their hardware's value with data - adoption
rates, success rates, error rates and device compatibility. Observability turns hardware
passkey deployments from a cost center into a measurable success story. Hardware passkeys
will remain the gold standard for high-security consumer authentication - but only if
people actually use them. Observability is the bridge between "deployed" and "adopted."

## Frequently Asked Questions

### Why do users fail to complete hardware passkey authentication even after my organization has distributed security keys?

The primary reason is OS-level prompt hierarchies that default to synced credential
managers (iCloud Keychain on iOS, Google Password Manager on Android) while burying the
external hardware authenticator option in secondary menus. On Android, OEM fragmentation
compounds the problem: manufacturers like Samsung, Xiaomi and Oppo ship modified builds
where NFC behavior is inconsistent, and some Android 14 builds have broken third-party
passkey provider support entirely. Without client-side observability to track where users
abandon the hardware path, organizations have no way to identify or fix the specific
breakpoints.

### How do I debug NFC tap failures and CTAP errors in a hardware passkey deployment?

Session-level observability captures the transport used (NFC, USB or BLE), the exact error
code (such as NotAllowedError in WebAuthn or ASAuthorizationErrorCanceled 1001 on iOS) and
the timing of each step in the authentication ceremony. When a support team receives a
complaint about a failed card tap, this telemetry enables root cause identification in
minutes, distinguishing between a WebAuthn timeout, a revoked credential, a PIN lockout or
a transport mismatch. Without client-side instrumentation, the server only records that no
assertion was received, providing no actionable diagnostic data.

### What is the difference between hardware passkey authentication in a browser versus a native mobile app?

In a browser, the relying party yields credential UX control to the browser and OS, where
conditional UI defaults to synced passkeys and hardware keys are typically buried behind
additional clicks in secondary menus. In a native app, the developer controls the
surrounding journey including retries, fallback routing and in-app guidance, even though
the actual passkey ceremony still goes through OS-managed frameworks like Apple's
AuthenticationServices or Android's Credential Manager. Native integrations also expose
richer, platform-specific error signals compared to the generic WebAuthn error codes
browsers surface, making debugging significantly easier.

### How can a hardware security key vendor compete with synced passkey UX when OS ecosystems favor iCloud Keychain and Google Password Manager?

Hardware vendors cannot change OS-level prompt hierarchies, but funnel analytics can
reveal precisely where users abandon the hardware path, such as the percentage who exit
before finding the external authenticator option. That data justifies investment in native
app flows with better in-app guidance, tighter platform API integration and
device-intelligent routing that suppresses hardware prompts on known-broken device/OS
combinations and redirects users to the highest-success fallback. Data-driven routing
decisions let hardware passkeys remain competitive without requiring OS-level changes.

### What metrics should I track to prove ROI on a large-scale hardware passkey deployment to executive stakeholders?

The core metrics are active hardware passkey utilization rate (the percentage of issued
credentials actually used for authentication), authentication success rate segmented by
transport type and device model and support ticket volume related to hardware login
failures. Comparing browser vs. native app authentication success rates and tracking how
these metrics shift after OS updates or SDK changes demonstrates continuous improvement
over time. Presenting these adoption metrics transforms the stakeholder narrative from
deployment counts to measurable business outcomes.