Every Indian business application has the same login problem. Passwords are reused and phished. SMS one-time passwords cost per message, arrive late on congested networks, and are themselves phished by the "share the OTP" scam that fills police bulletins. Email magic links get lost in spam. In 2026 there is a better default, and it is already on every device your customers own: passkeys.

What a passkey is

A passkey is a cryptographic key pair created for a specific website or app. The private half stays on the user's phone or laptop, protected by the device's fingerprint, face or PIN. The public half is stored by your application. At login, the device signs a challenge from your server; there is no shared secret to steal, and the key only works on the exact domain it was created for, which is what makes it phishing-resistant.

The standard behind it is WebAuthn and FIDO2. Apple, Google and Microsoft all sync passkeys across a user's devices, and Chrome, Safari, Edge and Firefox all support them. Android and iOS apps can use the same credential as the website.

Why it matters for a business

  • Cost: no per-login SMS charge. For a portal with 20,000 monthly logins that is a real line item removed.
  • Fraud: credential stuffing and phishing both stop working, because there is nothing to type and nothing that works on a lookalike domain.
  • Conversion: a face or fingerprint tap is faster than any password or OTP flow, so fewer people abandon checkout, registration or the app's first launch.
  • Support load: "I forgot my password" and "OTP not received" are usually the two largest ticket categories. Both shrink.
  • Compliance: the DPDP Rules require reasonable security safeguards. Phishing-resistant authentication is an easy one to point to.

Where passkeys fit, and where they do not

They are a strong fit for customer portals, e-commerce accounts, membership and matrimonial platforms, staff logins to ERP and CRM systems, and any app that currently uses SMS OTP as the primary login. They are a poor fit as the only method for audiences who share a single family phone, use very old devices, or log in from a cyber cafe. The rollout plan below handles that.

Implementation in a Laravel application

  1. Registration ceremony: after a user has logged in by the existing method, offer "Add a passkey". The browser creates the key pair; your server stores the public key, credential ID and a sign counter against the user.
  2. Authentication ceremony: on the login page, a single "Sign in with passkey" button asks the server for a challenge, the browser signs it, the server verifies the signature against the stored public key.
  3. Conditional UI: modern browsers can offer the passkey in the username field's autofill dropdown, so the user never even sees a separate button.
  4. Libraries: mature PHP WebAuthn packages exist and integrate with Laravel's guard system, so the application's existing authorisation logic is untouched.
  5. Relying party ID: this is your domain. Get it right from the start; passkeys created for one hostname do not work on another.

Implementation in a Flutter app

Both platforms expose passkeys natively: Credential Manager on Android and Authentication Services on iOS. A Flutter plugin bridges both to the same backend endpoints the website uses. The important step is associating the app with the domain through Digital Asset Links on Android and Associated Domains on iOS, so a passkey created on the website also signs the user into the app, and vice versa.

A rollout that does not lock anyone out

  1. Month 1: add passkeys as an optional second method. Prompt existing users once after a successful login.
  2. Month 2: make passkeys the default on the login screen, with the old method one tap away.
  3. Month 3 onward: keep a recovery path, typically email or a support-verified reset, and watch the share of logins by method. Move SMS OTP to recovery only when its share is small.

Never remove the fallback entirely for a consumer audience. For a staff-only ERP you can and should require passkeys or hardware keys for administrator roles.

Frequently asked questions

What happens if the customer loses their phone?

Passkeys sync through the user's Apple, Google or Microsoft account, so a new phone restores them. Your recovery path covers the rest, exactly as it does for a lost password today.

Do passkeys work on budget Android phones?

Yes on Android 9 and later with Google Play services, which covers almost every phone sold in India in the last five years.

Is this the same as biometric login in my banking app?

Similar experience, different security. Many apps use the fingerprint only to unlock a stored password locally. A passkey replaces the password with public-key cryptography, so there is nothing to leak from the server.

We add passkey login to Laravel platforms and Flutter apps as a scoped project, usually in one to two weeks. See our web application and app development services, or ask us about your current login flow.