Skip to main content

PCI DSS 4.0.1 Compliance Guide for jPOS-Based Systems

· 3 min read
Alejandro Revilla
Alejandro Revilla
jPOS project founder

Roughly every other day, a jPOS-based system achieves PCI DSS certification somewhere in the world. That statistic is not accidental—it reflects decades of work building a framework designed from the ground up for the specific demands of payment security. It also means that Transactility has more direct experience with jPOS PCI assessments than any consulting firm, QSA, or system integrator on the market.

This guide is the result of that experience, made freely available to the entire jPOS community.

What It Is​

The PCI DSS 4.0.1 Compliance Guide for jPOS-Based Systems is an 850-page, audit-ready reference document that maps every requirement, sub-requirement, and sub-sub-requirement of PCI DSS 4.0.1 to concrete jPOS implementations. It covers the full scope of The Payment Platform—jPOS, jPOS-EE, jCard, jPTS, and tpp-commons—and extends to supply chain security, cryptographic key management, and operational governance.

Each section is written for a mixed audience: developers who need implementation specifics, CISOs who need governance evidence, and QSAs who need to understand how controls are realized in practice. Every requirement includes three perspectives—customer, auditor, and adversary—so the guidance is grounded in how controls actually get tested and, more importantly, how they actually get attacked.

The guide includes:

  • Full requirement coverage — every PCI DSS 4.0.1 requirement, sub-requirement, and note, addressed in detail
  • jPOS-specific implementation guidance — CryptoService, TokenizationService, HSM integration, Q2 logging, transaction participant patterns
  • Policy template library — over 50 ready-to-customize policy templates covering access control, key lifecycle, incident response, patch management, and more
  • Supply chain security framework — aligned with ISO/IEC 20243 (O-TTPS), covering SBOM lifecycle, dependency scanning, CI/CD hardening, and CVE response SLAs
  • Cross-standard alignment — mapped to ISO/IEC 27001, NIST SP 800-57, NIST SP 800-63B, and ISO/IEC 20243 throughout
  • Diagrams-as-code — network topology documentation guidance designed for Git-based version control and change management

Download​

Download the PCI DSS Guide (PDF)

The document is free to use, adapt, and build on. Use the policy templates as a starting point, replace the Transactility branding with your own, and tailor the jPOS-specific guidance to your deployment. No strings attached.

When You Need More Than a Document​

Reading a compliance guide and operating a secure payment system are two different things. If your organization is preparing for a PCI DSS assessment, responding to a security incident, or building a payment platform and wants the team that built jPOS directly involved—in architecture reviews, policy development, QSA preparation, or implementation—we are available.

Nobody knows the jPOS codebase, its security model, or its real-world failure modes the way the people who built it do.

When it matters most, bring the core team into the room.
transactility.com