name : start-web-authn-registration.rst **To get passkey registration information for a signed-in user** The following ``start-web-authn-registration`` example generates WebAuthn registration options for the current user. :: aws cognito-idp start-web-authn-registration \ --access-token eyJra456defEXAMPLE Output:: { "CredentialCreationOptions": { "authenticatorSelection": { "requireResidentKey": true, "residentKey": "required", "userVerification": "preferred" }, "challenge": "wxvbDicyqQqvF2EXAMPLE", "excludeCredentials": [ { "id": "8LApgk4-lNUFHbhm2w6Und7-uxcc8coJGsPxiogvHoItc64xWQc3r4CEXAMPLE", "type": "public-key" } ], "pubKeyCredParams": [ { "alg": -7, "type": "public-key" }, { "alg": -257, "type": "public-key" } ], "rp": { "id": "auth.example.com", "name": "auth.example.com" }, "timeout": 60000, "user": { "displayName": "testuser", "id": "ZWFhZDAyMTktMjExNy00MzlmLThkNDYtNGRiMjBlNEXAMPLE", "name": "testuser" } } } For more information, see `Passkey sign-in <https://docs.aws.amazon.com/cognito/latest/developerguide/amazon-cognito-user-pools-authentication-flow-methods.html#amazon-cognito-user-pools-authentication-flow-methods-passkey>`__ in the *Amazon Cognito Developer Guide*.