> For the complete documentation index, see [llms.txt](https://docs.verifone.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.verifone.com/psdk-sdi/readme.md). # PSDK-SDI Getting Started The Verifone **Payment Software Development Kit - Secure Data Interface** (PSDK-SDI) is a PCI-compliant payment solution providing low-level integration to Verifone terminals. Build your own Payment applications with direct access to card readers, EMV kernels, security functions, and peripherals. {% columns %} {% column %}

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{% endcolumn %} {% endcolumns %} {% hint style="info" %} ### **Key Benefits:** * One integration across all Verifone platforms and regions * Cross-platform support (Android, iOS) * Unified API and documentation {% endhint %} {% hint style="warning" %} ### **Prerequisites:** * Android/iOS development environment, Verifone terminal, payment processing knowledge, async programming familiarity * **Code Samples:** Kotlin (Android) and Swift (iOS) with sequence diagrams, best practices, and error handling patterns {% endhint %} {% stepper %} {% step %} #### Quick Start Guide
Review our quick start guide for a thorough understanding of the integration process and its wide-ranging capabilities. This guide provides steps for integration, with insights and tips.
import com.verifone.sdi.payment_sdk.*;
private PaymentSdk mPaymentSdk;
private TransactionManager mTransactionManager;
mPaymentSdk = PaymentSdk.create(context);
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{% endcolumn %} {% endcolumns %} {% endstep %} {% step %} #### Setup the Development Environment
Follow the setup guides to create the correct development environment for your solution.
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{% endcolumn %} {% endcolumns %} {% endstep %} {% step %} #### Study the Integration Requirements

Study the usage rules for critical integration requirements.


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{% endcolumn %} {% endcolumns %} {% endstep %} {% step %} #### Complete the Code Labs
Utilize the working examples of key functionality to help with your integration.
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{% endcolumn %} {% endcolumns %} {% endstep %} {% endstepper %} --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation by asking a question. Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters: ``` GET https://docs.verifone.com/psdk-sdi/readme.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.