The machine must support MDB (Multi-Drop Bus) protocol to ensure compatibility with global payment hardware. For cross-border operations, verify that the supplier can integrate Nayax, AirVend, or local credit card readers (Visa/Mastercard). Additionally, ensure the Cloud Management System (SaaS) allows for real-time inventory monitoring, remote price adjustment, and sales analytics. If you are a large-scale operator, confirm if the supplier provides API documentation for integration with your existing ERP or membership systems.