OTP Service

OTP (One Time Password) is a security technique that generates and delivers single-use passwords, renewed for each session, to ensure user authentication and transaction security.

The Message34 OTP system enhances the security of your registration, login, password reset, and transaction approval processes by sending one-time passwords (OTPs) to your users via SMS, email, or WhatsApp channels.
Our system performs these operations at high speed, reliably, and fully automatically. Since OTP transmissions are carried out through Message34’s dedicated infrastructure, there is no need to install or maintain any additional software on your own system.
This ensures a seamless user experience while maintaining the highest level of security for your organization.

  • Secure

    Verification
    Generation of single-use, time-limited passwords for each transaction

  • Flexible

    Integration
    Easily adapts to all systems with API and SDK support

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How Does OTP Work?

The Message34 OTP system instantly generates a one-time password based on the user’s request and delivers it through the selected channel.
The user enters this password during login, registration, or transaction approval. The system verifies the request in real time and securely returns the result via API. Each OTP code is single-use and automatically expires after a certain period.

The Message34 OTP system:

  • Uses different servers and IP blocks to deliver the code,
  • Applies HTTPS and TLS encryption for security,
  • Generates dedicated logs and reports for each transaction,
  • Can operate simultaneously or with sequential fallback across different channels (SMS, email, WhatsApp).

This ensures that your system has a seamless, fast, and secure verification infrastructure.

The OTP system provides a secure, fast, and user-friendly solution for authentication processes. It minimizes risks such as fraud, fake account creation, or unauthorized access. Since it generates one-time passwords for each transaction, it prevents the misuse of user information, strengthens brands’ digital security, and makes the verification process more efficient both technically and experientially.

Why Is OTP Necessary?

One-time password (OTP) systems are the most reliable method for verifying user accounts, payment transactions, or critical changes.
For example, you may want to verify the identity of a new user registering on your application or reset the password of an existing user.
If static or reusable passwords are used in these processes, account security becomes seriously vulnerable.
Message34 OTP eliminates this risk:

  • Generates a different password for each transaction,
  • Automatically invalidates expired codes,
  • Applies brute-force protection against incorrect or repeated login attempts,
  • Can limit the number of attempts per user when necessary.

A secure OTP system enhances user trust in your brand, reduces fraud risks, and accelerates your transaction workflows.

What Checks and Features Does OTP Include?

  • Code Validity Period (TTL)
    Each generated code becomes invalid after the specified period. This duration can be configured from the management panel.
  • Channel Selection and Backup
    Delivery can be made via SMS, email, or WhatsApp. If one channel fails, the system automatically redirects to another (fallback).
  • API & SDK Support
    Integration can be done with just a few lines of code using RESTful API and ready-to-use SDKs. All operations return in JSON format.
  • Reuse Prevention
    Each code can be verified only once. If re-entered, the system returns a warning.
  • IP and Regional Restriction
    OTP requests can be restricted to specific IP addresses or countries.
  • Security Layers
    Your system’s integrity is protected through HTTPS/TLS encryption, rate limiting, log records, and suspicious activity detection.
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