Available on Enterprise

WhatsApp OTP Authentication

WhatsApp OTP is an authentication method that delivers one-time passwords through WhatsApp messaging, offering a familiar alternative to SMS for users who live in WhatsApp.

Let users sign in with a code sent to WhatsApp instead of a password - one API alongside passkeys, magic links and social login. Available on Enterprise.

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Key Features

Secure and reliable WhatsApp-based one-time passwords

Secure OTP Generation

Cryptographically secure, time-limited one-time passwords

Global WhatsApp Delivery

Reliable OTP delivery via WhatsApp worldwide

Customizable Templates

Brand the WhatsApp messages to match your company identity

Configurable Expiry Times

Set custom expiration times for enhanced security

Rate Limiting

Built-in protection against brute force attacks

Comprehensive Analytics

Detailed insights into OTP usage and success rates

How WhatsApp OTP Works

A simple, secure authentication flow for your users

Request
User enters their phone number on your login page
Delivery
User receives a WhatsApp message with a secure, time-limited OTP code
Verification
User enters the OTP code to complete authentication

Simple Integration

Implementing WhatsApp OTP with MojoAuth is straightforward. The same API also serves passkeys, magic links, email and SMS OTP, and social login.

Deploy in hours, not months
Customizable WhatsApp templates
Secure OTP generation and validation
Comprehensive analytics and reporting

View implementation guide

index.html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>MojoAuth Passwordless Login</title>
  <script src="https://cdn.mojoauth.com/js/mojoauth.min.js" charset="UTF-8"></script>

</head>
<body>

  <h1>Login with MojoAuth</h1>
  <div id="mojoauth-passwordless-form"></div>

  <script>
    // Initialize MojoAuth instance
    const mojoauth = new MojoAuth("YOUR_MOJOAUTH_API_KEY", {
      language: 'en',  // Replace 'en' with your preferred language code if needed
      redirect_url: "https://yourwebsite.com/callback",  // Replace with your redirect URL after login
      source: [
        { type: "phone", feature: "whatsapp-otp" }
      ]
    });

    // Trigger sign-in flow
    mojoauth.signIn().then(response => {
      console.log("Login Response:", response);

      // Example: Redirect after successful login
      if (response && response.access_token) {
        window.location.href = "/dashboard";  // Replace with your post-login page
      }
    }).catch(error => {
      console.error("Authentication Error:", error);
    });
  </script>

</body>
</html><!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>MojoAuth Passwordless Login</title>
  <script src="https://cdn.mojoauth.com/js/mojoauth.min.js" charset="UTF-8"></script>

</head>
<body>

  <h1>Login with MojoAuth</h1>
  <div id="mojoauth-passwordless-form"></div>

  <script>
    // Initialize MojoAuth instance
    const mojoauth = new MojoAuth("YOUR_MOJOAUTH_API_KEY", {
      language: 'en',  // Replace 'en' with your preferred language code if needed
      redirect_url: "https://yourwebsite.com/callback",  // Replace with your redirect URL after login
      source: [
        { type: "phone", feature: "whatsapp-otp" }
      ]
    });

    // Trigger sign-in flow
    mojoauth.signIn().then(response => {
      console.log("Login Response:", response);

      // Example: Redirect after successful login
      if (response && response.access_token) {
        window.location.href = "/dashboard";  // Replace with your post-login page
      }
    }).catch(error => {
      console.error("Authentication Error:", error);
    });
  </script>

</body>
</html>

Benefits of WhatsApp OTP

Why businesses and users choose WhatsApp OTP authentication

For Businesses

An alternative channel when SMS delivery is unreliable
Lower cost compared to SMS in many regions
Rich message formatting capabilities
Better user engagement and conversion
Reach users in markets where WhatsApp is the default messenger
Detailed analytics on delivery and engagement

For Users

Familiar WhatsApp interface
No SMS charges for receiving codes
Works on WiFi without cellular connection
Enhanced privacy with WhatsApp encryption
Easy to copy OTP codes on smartphones
Reliable delivery even in areas with poor cellular coverage

Ready to add WhatsApp OTP?

WhatsApp OTP is available on Enterprise. Book a demo to see it alongside passkeys, magic links and social login on one API.