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The SDK supports multiple transaction flows to accommodate diverse use cases, from single-step payments to multi-step preauthorization and confirmation processes. This flexibility allows developers to choose the flow that best suits their application’s requirements while maintaining security and reliability. The available transaction flows are:

Payment with Pre-Authorization

A two-step process where a transaction amount is preauthorized before being confirmed for settlement. Ideal for scenarios where the exact final amount is unknown (such as EV charging).

Closed Loop Transaction

Closed-loop transactions refer to operations using MIFARE cards. A MIFARE card UID is used to process the operations in their application server, which does not involve bank transactions.

Single Step Payment

The single-step payment flow allows for immediate authorization and settlement in one operation, streamlining the payment process for use cases that require fast, straightforward transactions.

Pre-Authorization with External Settlement

Separates the authorization and settlement phases. A 3rd-party server handles final settlement via the Nayax API, giving you control over when and how much to charge. Ideal for EV charging and similar variable-amount use cases.