Open-loop contactless payment validators with NFC, secure element, and ITxPT compliance — replacing proprietary closed-loop cards and unlocking €10-40M public transit contracts.
European public transport is undergoing a payment revolution. EU Regulation 2021/782 and national digitalization mandates increasingly require open-loop payment acceptance — allowing passengers to pay with standard EMV contactless cards (Visa, Mastercard) or mobile wallets (Apple Pay, Google Pay) instead of proprietary transit cards.
Transit validator manufacturers that still rely on closed-loop MIFARE-based systems are being disqualified from tenders worth €10-40M per city deployment. The EMV open-loop requirement is no longer a "nice-to-have" — it is a mandatory technical criterion in 60-70% of new European transit tenders. Companies without certified EMV validators cannot even submit bids.
The engineering challenge is substantial. EMV contactless payment requires Level 1 (NFC hardware) and Level 2 (EMV kernel) certification from payment networks. The validator must integrate a secure element or HSM for transaction processing, support transit-specific schemes (cEMV, ITSO, Calypso), comply with ITxPT architecture standards for vehicle integration, and operate reliably at -20C to +55C in ruggedized enclosures. This combination of payment security, embedded hardware, and transit-domain expertise is rare — and exactly what Promwad delivers.
Promwad designs and certifies a complete open-loop payment validator for public transit — from NFC antenna design through EMV kernel integration to ITxPT-compliant vehicle connectivity. The validator supports both contactless EMV (tap-to-pay) and legacy closed-loop cards during the transition period.
The architecture prioritizes security and certification speed. A dedicated secure element handles all payment processing in a tamper-resistant environment, while the application processor manages transit logic, fare calculation, and vehicle integration. This separation allows the payment core to be certified independently, reducing the recertification burden when transit-specific features are updated.
Yes. The NFC reader supports ISO 14443 A/B (MIFARE, Calypso) alongside EMV contactless. Transit operators typically run both systems in parallel for 2-3 years during migration. The fare engine handles both card types with unified trip accounting.
EMV Level 1 (contactless interface) typically takes 2-3 months. EMV Level 2 (kernel certification) takes 4-6 months. PCI PTS compliance adds 2-3 months. Total certification timeline is 6-12 months depending on test lab availability and first-pass success rate. Promwad's experience with payment hardware accelerates the process by avoiding common certification pitfalls.
The validator architecture supports QR code reading via an optional camera module for barcode-based mobile tickets. However, the primary value proposition is EMV open-loop — which is the requirement driving tender eligibility. QR ticketing can be added as a secondary feature without affecting EMV certification.
Promwad designs the validator hardware and firmware, including the secure transaction processing and offline storage. The payment backend (acquirer integration, reconciliation, settlement) is typically provided by a payment processor partner. Promwad delivers the acquirer API integration on the validator side.