How to easily accept cashless payments via MDB on a Raspberry

The video shows how easy it is to use the Qibixx MDB Pi Hat on a Raspberry Pi and accept cashless payments with a few lines of code. Of course, this also works with an MDB-USB interface from Qibixx. Both interfaces provide a high-level serial interface that accepts simple ASCII commands. Qibixx MDB devices are in use by many customers worldwide. They are inexpensive, reliable, and available from stock for shipment anywhere: https://qiba.pt Full technical documentation can be found at https://docs.qibixx.com