Vending, Unattended Payments, MDB, Contactless Payments, Payment Engineering, EMV, SoftPOS, Vending Technology

Understanding MDB Levels and How They Shape Vending Payments

A practical guide to MDB Levels 1, 2, and 3, the protocol that governs how your vending machine handles payment. Learn how each level shapes transaction speed, user flow, and the contactless tap-to-pay experience, and which one to target.

Kevin Medina Jul 7, 2026 3 min read