Integration Models/Smart 2FA + Biometric
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Smart 2FA + Biometric
Programming hybrid login to reduce cost and increase security.
This system is highly cost-effective and convenient. It doesn't require a WhatsApp message every time, merging it with device biometrics (Passkeys).
Integration Steps:
1. Upon login, the user enters the password. If it's their first time, perform a full ReOTP as usual.
2. After successful ReOTP, offer to "Register this trusted device via Biometric" using the WebAuthn API.
3. For the next week (store this state on your server or cookies), the user logs in with (Password + Biometric) only, costing you nothing in ReOTP tokens.
4. After 7 days, your backend forces a re-verification via ReOTP to renew trust.