Passkeys let people sign in with the fingerprint, face or PIN they already use to unlock their phone or laptop, with no password to remember, reuse or leak. Built on the FIDO and WebAuthn standards and supported by Apple, Google and Microsoft, passkeys are steadily replacing passwords on major sites, and they're now practical for any website with user accounts.
Why passkeys are safer
- Phishing-resistant: a passkey only works on the real website it was created for. A lookalike site can't use it.
- Nothing to steal from your database: the server stores a public key, not a secret.
- No reuse: every site gets its own key.
- Easier for users: one tap or glance, synced across their devices.
For Indian e-commerce and fintech, where OTP fatigue and SIM-swap fraud are real problems, passkeys are a meaningful upgrade.
How they work, briefly
- Registration: the user's device creates a key pair for your site and keeps the private key secure, usually synced through their Apple, Google or password-manager account.
- Sign-in: your server sends a challenge, the device signs it after the user's fingerprint or face check, and your server verifies it with the stored public key.
Adding passkeys to your site
- Use a well-maintained library or auth provider rather than implementing WebAuthn yourself.
- Offer passkeys alongside existing login at first, and prompt users to add one after they sign in normally.
- Keep account recovery strong, since that's where attackers go next.
- Support "conditional UI" so passkeys appear in the browser's autofill on the login form.
- Test across devices: iPhone, Android, Windows and Mac.
Secure logins for your platform
At NextGen Fusion, our web development company in Lucknow, we build user accounts with modern authentication, including passkeys and OTP alternatives, for e-commerce stores, SaaS products and member portals.
