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Passkeys in Multi-Device Ecosystems: Reference Architecture, Recovery, Telemetry, and Phishing-Resistant Authentication at Scale

Author

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  • Sasibhushana Matcha

    (Visvesvaraya Technological University, Machhe, Belagavi, Karnataka 590018, India)

  • Sreekanth Rachamadugu

    (MetLife)

Abstract

—Passkeys extend WebAuthn/FIDO2 beyond a single browser API into a multi-device capability. The cryptography is mature, but deployments often struggle at the edges: device changes, recovery, cross-device flows, and inconsistent behavior across web and native surfaces. This paper provides a practical reference architecture, end-to-end flows, and an operational playbook (telemetry, SLOs, and failure taxonomy). We include a scenario-based evaluation using synthetic traces and de-identified event schemas so teams can adapt the approach to their environment.

Suggested Citation

  • Sasibhushana Matcha & Sreekanth Rachamadugu, 2026. "Passkeys in Multi-Device Ecosystems: Reference Architecture, Recovery, Telemetry, and Phishing-Resistant Authentication at Scale," International Journal of Latest Technology in Engineering, Management & Applied Science, RSIS International, vol. 15(9), pages 2455-2463, September.
    • Handle: RePEc:bjf:ijltem:v:15:y:2026:i:9:a:463
    DOI: 10.51583/IJLTEMAS.2026.150900114
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