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EMV Terminal Simulator for Payment Application Testing

Streamline development and accelerate compliance validation with Mellonne Terminal Simulator, the first EMVCo C-8 capable testing tool. 

Simulate any type of payment terminal and perform a wide range of tests on payment applications, all in a single solution.

The Mellonne Terminal Simulator is designed to support EMV payment testing and validation across modern payment environments.

Key Features & Capabilities

EMV Payment Terminal Simulation
  • Simulate chip, contactless, and mobile transactions for real-world payment environments.
  • Test payment cards & applications with precise behavior validation.
  • Ensure EMVCo C-8 compliance by testing and debugging smart card applications.

  • Analyze cryptographic data and troubleshoot card authentication processes.

  • Validate transaction messages by simulating host interactions.
  • Ensure integrity between terminal, card, and host systems.
  • Create and execute L3 test cases by selecting predefined terminal profiles.
  • Export logs in various formats, including L3 certification reports.
  • Test cryptographic authentication to validate encryption mechanisms.
  • Ensure transactions meet regulatory and industry requirements.

Benefits​

  • Save Time & Reduce Errors – Intuitive test configuration simplifies setup and execution.
  • Improve Visibility & Debugging – Detailed transaction logs enhance error detection.
  • Seamless Compliance & Certification – Meets EMVCo and major payment network standards.
  • Flexible Export & Data Analysis – Supports custom test environments & proprietary kernels.
  • Scalability & Advanced Testing – Designed for high-volume testing and future payment technologies.

Advanced testing strategies can also rely on methodologies such as model-based testing to generate consistent and repeatable test scenarios across complex testing environments.

Why Choose Mellonne?

Network & Protocol Compatibility

✔ Works with Mellonne Network Simulator, and third-party Network Simulator.
✔ Compatible with any host simulator supporting ISO8583 protocol.
✔ Supports online PIN verification, cryptogram validation, and issuer scripts.

EMV XDA Terminal Simulator
Future-Proofing Cryptographic Standards

✔ Supports Elliptic Curve Cryptography (ECC) as per EMVCo Specification Bulletin No. 243.
✔ Implements XDA and ODE for next-generation cryptographic processes.

Frequently Asked Questions

A terminal simulator is used to emulate the behavior of a payment terminal during payment transactions.

It allows engineers to test payment applications, simulate EMV transaction flows, and validate communication between the terminal, the card, and the host system before deployment or certification.

The Mellonne Terminal Simulator supports EMVCo C-8 testing and allows engineers to validate payment application behaviour during transaction execution.

It enables testing of smart card interactions, transaction messages, and cryptographic authentication processes to ensure that payment systems operate correctly and comply with EMV requirements.

Yes. The Mellonne Terminal Simulator can simulate several types of payment environments, including:

  • chip transactions

  • contactless payments

  • mobile payment transactions

This allows engineers to reproduce real-world payment scenarios and validate application behaviour across multiple transaction types.

The Terminal Simulator can simulate host interactions and validate transaction messages exchanged between the terminal and backend systems.

It supports environments using the ISO8583 protocol, allowing engineers to verify transaction messages and ensure consistency between the payment application, the terminal behaviour, and the host system.

Yes. The Mellonne Terminal Simulator can be used to prepare payment applications and devices before certification.

Engineers can execute EMV Level 3 test cases, analyse transaction logs, and validate system behaviour before running official certification processes.

Learn more about terminal simulation

Terminal Simulator for Payment Testing

If you want to better understand how terminal simulation supports payment testing and EMV validation, read our detailed guide on terminal simulators for payment testing.

The Mellonne Terminal Simulator allows us to perform quality assurance checks on demand, and investigate any issues far more quickly and efficiently than undertaking transactions using actual POS terminals.

Colin Tanner​ - Founder & CTO, Digiseq
Read the full Customer Story

Accelerate Compliance & Optimize Payment Testing

Ensure seamless EMV transaction validation and payment application testing with Mellonne’s EMVCo C-8 capable Terminal Simulator — designed to improve debugging, testing efficiency, and compliance validation.

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