Passkeys in India: A WebAuthn Adoption Guide
Plan a passkey rollout with stable RP IDs, user verification, synced and device-bound credentials, safe recovery, and measured device testing.
Roll out passkeys through a stable authentication domain, a reviewed user-verification policy and a tested recovery process. Start with a small cohort. Measure sign-in failures and recovery outcomes before changing the default for all users.
Passkeys can reduce reliance on shared secrets. Your application still needs account binding, session security and authorization. Indian users' devices and recovery needs should inform the implementation through observed evidence.
Understand what the server verifies
A passkey uses a public-key credential. During authentication, the authenticator signs a fresh challenge. The relying party verifies the signature and the required WebAuthn values. The application does not receive the private key or a biometric template. WebAuthn specification.
The authenticator can require a PIN or biometric as local user verification. That check is different from proving a person's legal identity or performing biometric liveness assessment. Inspect the returned flags and enforce the policy your service requires.
Separate synced and device-bound credentials
A passkey provider can synchronize credentials under its own protected account system. A device-bound credential remains tied to its authenticator. Platform availability, enterprise policy and user choices affect which behavior applies. FIDO passkey overview.
Do not describe every platform credential as synced or every hardware key as a complete recovery plan. Review synced passkeys and hardware keys for custody and lifecycle trade-offs.
Choose the relying-party identifier before enrolment
The relying-party identifier, or RP ID, is a security boundary. Confirm its relationship to the authentication origin before enrolling users.
| Deployment choice | Review before launch |
|---|---|
| Managed authentication domain | The actual RP ID and supported browser origins |
| Custom authentication domain | Domain ownership, configuration and RP ID stability |
| Separate Test and Live environments | Credential isolation and approved test accounts |
| Planned domain migration | Supported related-origin options or new enrolment |
Do not assume that changing a domain preserves all existing credentials. Test the specific migration plan. Custom authentication domains.
Make recovery match account impact
A passkey's phishing resistance does not make an email or SMS recovery route phishing-resistant. If that route can replace a privileged credential, assess it as a route to the same account.
For a low-impact consumer service, a documented inbox-based recovery route can be a practical choice. A privileged operator account may need separately enrolled credentials and additional reviewed checks. Base the decision on the account's impact.
Use secure account recovery to define recovery evidence, notifications and session cleanup. Use sign-in method comparison when selecting the initial method set.
Prepare a small rollout cohort
Choose users and devices that represent the supported application. Include shared devices, unavailable passkey providers, a second device and lost-credential recovery in the test plan.
Avoid a claim that all Android users have the same capability. Record the actual operating system, browser, authenticator and policy combination tested.
- Confirm the RP ID and allowed origins.
- Authenticate the account before offering enrolment.
- Register a passkey through the maintained implementation.
- Test returning-user sign-in on the supported device.
- Test the approved second-device journey.
- Test loss and removal of a credential.
- Confirm the intended recovery checks.
- Record failures before expanding the cohort.
Integrate the hosted flow through OIDC
With hosted authentication, the issuer operates the WebAuthn ceremony. Your application runs the approved OIDC flow and validates the resulting tokens. The passkey credential and application session are separate records.
NamoID's current authorization-code flow requires PKCE S256 across client types. Keep the callback bound to its pending transaction. Validate the ID token for the client, and use an access token only for its intended resource. PKCE implementation guide, ID and access tokens.
For browser form behavior, use the passkey autofill example. For physical authenticators, use the YubiKey protocol guide.
Measure adoption without weakening the fallback
Record enrolment completion, successful authentication, cancellation, unsupported-device outcomes and recovery completion. Separate failures caused by user choice from implementation errors.
Define the cohort and observation period before comparing methods. Use your observed results to change the default. Do not invent conversion improvements or remove recovery solely to increase the passkey percentage.
Review the browser-level behavior
Use the WebAuthn Level 3 guide for browser and authenticator details. Test actual supported versions before treating a specification feature as universal device support.
Review a rollout with NamoID
NamoID engineers can help review hosted sign-in, RP ID choices and account recovery boundaries. Confirm method availability and environment configuration for your application.
Share your stack, supported devices and account-impact requirements in Slack for an early response. Contact the NamoID team