I've been deep-diving into passwordless auth flows for our customer portal, and JumpCloud's "Passwordless Authentication" feature keeps coming up. From a pure performance and user experience perspective, the promise is huge—eliminating password friction should speed up login sequences and improve conversion. But I'm obsessed with real-world reliability and metrics.
Has anyone here implemented JumpCloud's passwordless login (like magic links or biometrics via their SSO) in a production environment? I'm less interested in the sales sheet and more in the operational details:
* **Latency:** What's the real-world delay between a user requesting a magic link and it hitting their inbox? This directly impacts our "Time to Interactive" for that auth flow.
* **Failure rates:** Have you seen issues with link delivery (especially in enterprise environments with aggressive spam filters) or biometrics failing on certain device configurations?
* **Monitoring:** How are you tracking the performance of this auth journey? Are you using RUM to capture the entire chain, from button click to successful redirect? I'm thinking of custom events tied to Web Vitals.
Our current flow is a performance bottleneck, and I'm wary of swapping it for something that might be faster on paper but introduces new points of failure. I'd love to see some real data or config snippets on how you've instrumented it. For example, are you injecting custom timing marks into the process?
```javascript
// Something like this for the magic link flow?
performance.mark('authMagicLinkRequested');
// ... then on successful verification ...
performance.mark('authMagicLinkCompleted');
performance.measure('authMagicLinkTotal', 'authMagicLinkRequested', 'authMagicLinkCompleted');
```
Any gotchas, especially around browser compatibility or session management after the passwordless step, would be super helpful.
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