Authentication Observability
Most login failures happen where your logs can't see
Between the login button and the session sit the browser, the operating system and the password manager. The debugger shows that part for one ceremony on your device. Corbado Observe shows it for every login in production, across all your authentication methods.
One login, five stages
Each stage links to the KPI that measures it.
01
Login offered
The user sees the login.
02
Method started
Passkey, password or OTP.
03Not in server logs
Passkey prompt
Browser and OS sheet opens.
04Not in server logs
Authenticator
Biometrics, PIN or security key.
05
Session
Your server verifies it.
Most read
The guides teams open first when logins fail.
Passkey Troubleshooting: Solutions for Passkey Issues & Errors
Common passkey error messages, what causes them and how to solve them.
Ultimate WebAuthn Errors in Production Guide (2026)
Learn what common WebAuthn errors like NotAllowedError mean in production and how to classify them by operation type, timing and platform context.
Android & Google Play Services Passkey Error Codes (2026)
Complete reference of Google Play Services passkey error codes (50100-50196) as of GPS v26.06.32. Maps every code to WebAuthn errors.
Login failure debugging
What the error codes from Apple, Android and the browser really mean, and why logins break in production.
Full series on corbado.com
Apple Passkey Error Codes: Complete Reference (2026)
Complete reference of Apple's passkey error codes across macOS 26.2 and iOS 26.2. Maps ASCAuthorizationError to ASAuthorizationError to DOMException.
Passkeys in In-App Browsers: Why Logins break and how to fix it
Passkeys often break inside social-app in-app browsers (Instagram, TikTok, Facebook). Learn why it happens, how to detect WebView traffic and how to route users to a method that works.
Authentication Failure Root Cause Analysis
Learn how to run root cause analysis for login and authentication failures across passkeys, social login, OTP, browsers and devices.
Native App Passkey Errors: Ultimate Overview (2026)
Native app passkey errors differ drastically between iOS and Android. Learn what breaks, why Android is 3-5x worse and how to measure it.
Why do passkeys fail on managed Windows devices?
Why passkeys fail on managed Windows devices, how policy changes create mixed fleets and how to test corporate device readiness.
Observability in practice
Why backend logs stop at the WebAuthn API and how to measure the client side of every login.
Full series on corbado.com
Why you need Authentication Observability for CIAM
Why consumer authentication observability matters. Go beyond backend logs with client-side telemetry, passkey analytics and real-time adoption nudging.
Authentication Analytics: Metrics & Login Funnels
Track authentication metrics: login success rates, error classification and adoption KPIs. Build funnels and debug auth issues across all auth methods.
Tracking Logins in Google Analytics (GA4)
Model and track login events in Google Analytics GA4 so you can build a clear sign-in funnel, cohorts and experiments for authentication flows.
Hardware Passkey Observability: Close the UX Gap
Hardware passkeys win on security but lose on adoption. Learn how observability closes the UX gap with synced passkeys and proves hardware passkey ROI.
Rollout and adoption
How large deployments get passkeys created and used, and what goes wrong after launch.
Full series on corbado.com
Conditional Create for Passkeys: Support & Effectiveness
Learn how Conditional Create upgrades passwords to passkeys on iOS, Android & Windows. Discover platform support, prerequisites & strategic value.
Enterprise Guide: Passkeys for Existing Large-Scale Consumer Deployments
How enterprise passkeys solve phishing, SMS OTP costs and account recovery for large-scale consumer deployments. ROI, implementation steps and adoption guide.
How to get high Passkey Adoption in Creation Flows
Optimize passkey creation adoption with post‑sign‑in nudges, A/B‑tested messaging and cross‑device coverage.
How to get high Passkey Adoption in Login Flows
Learn how to optimize passkey login adoption to drive passkey login rate over 50%. Understand the advantages of Passkey Intelligence & One-Tap Buttons.
Passkey Day 2 Problems: 5 Risks after Launch
Passkeys are great until you ship them wrong. Learn the 5 Day 2 problems around recovery, cross-device UX, native apps, adoption and platform changes.
Authentication KPI index
Definitions and benchmarks from the Passkey Benchmark 2026.
Adoption
Reliability
Friction and speed
Questions
- Why don't server logs show passkey failures?
- The passkey prompt, the biometric or PIN step and the password manager run in the browser and the operating system. Your server only sees the request that arrives after the user finished. A cancelled prompt or a NotAllowedError never reaches it.
- Which KPIs show whether a passkey rollout works?
- Passkey Enrollment Rate and Passkey Usage Rate show adoption. Authentication Error Rate and Passkey Authentication Success Rate show reliability. Time to Authenticate and Authentication Drop-Off Rate show friction.
- What is authentication observability?
- Measuring every login from the moment it is offered to the session, including the part in the browser, the OS and the password manager, across all authentication methods. Corbado Observe does this in production. The Passkeys Debugger shows it for one ceremony on your device.
Corbado Observe
The debugger shows one login. Observe shows all of them.
The same client-side detail for every login in production, so you see where users fail before support tickets do.
Every authentication method
Per-user journeys
Device readiness
Your existing IdP