Guides
Practical guides for developers connecting till and POS software to card terminals.
How to accept card payments from your own till software
Your POS already rings up the sale. Here is how to hand the amount to a card terminal and know for sure whether the customer paid, without writing a single line of card-handling code.
Read the guide →Cloud vs Bluetooth vs USB: choosing a card terminal integration
Three ways to connect a till to a card terminal, what each costs you in support calls, and why cloud integration is the easiest to roll out across many shops.
Read the guide →Integrating a Sunmi or Nexgo card terminal with your POS
Step by step: register the terminal by its serial number, enter the device key, and push your first payment to a Sunmi or Nexgo terminal from your till.
Read the guide →Handling payment webhooks: signatures, retries and duplicates
A payment webhook is how your till learns a card was approved. How to verify it really came from Revoluno, survive retries without double-counting, and recover when one goes missing.
Read the guide →Taking USD and ZWG card payments at the till
Zimbabwean tills often price in two currencies. How to send the right currency and amount to the card terminal, and what to store for reconciliation.
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