Server-side passkey registration     Web guides     Google for Developers

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Note:This article is part of a series on server-side passkey implementation. Explore the other articles in this series: Introduction to server-side passkey implementation and Server-side passkey authentication.This article focuses on server-side functionality. To learn about the overall passkey registration flow including client-side steps, review Create a passkey for passwordless logins for the web, or Registration flows with Credential Manager for an Android app.OverviewKey Term:The relying party (RP) is your web or mobile application. The web specification defines it as "the entity whose web application utilizes the WebAuthn API to register and authenticate users".Here's a high-level overview of the key steps involved in passkey registration:Define options to create a passkey. Send them to the client, so you can pass them to your passkey creation call: the WebAuthn API call navigator.credentials.create on the web, and credentialManager.createCredential on Android. After the user co…