A one-time password (OTP) is a temporary code sent to a user to verify their identity at login or when completing a sensitive transaction — a cornerstone of two-factor authentication (2FA).
Multiple Channels for Resilience
Send the code over SMS, WhatsApp, or a voice call, with automatic failover to an alternate channel if it doesn’t arrive within seconds.
Security Built on Best Practices
Keep the code short-lived, limit attempts, and never reuse codes — to protect your customers’ accounts from fraud.
Fast Integration
With the Gateway Verify API, you can generate and validate codes without building complex logic on your side.