As the demand for unattended retail grows, businesses are shifting toward self-service models to reduce overhead and improve customer experience. However, the bridge between a self-service kiosk and a secure payment gateway is often the most complex part of the build. This guide provides a technical deep-dive into integrating third-party payment SDKs into kiosk environments, featuring insights on high-performance hardware like the AonpoTech APK06 Series. Frequently Asked Questions: Kiosk Payment Integration 1. What is the best architecture for kiosk payment integration? For self-service kiosks, the Semi-Integrated Architecture is the industry standard. How it works: Your kiosk application sends a transaction request (amount, currency) to the payment terminal via an SDK or API. The terminal handles the sensitive card data and encryption, returning only a "Success" or "Failure" token to the kiosk. Why it’s better: It keeps your primary kiosk software out of "PCI Scope," meaning you don’t have to undergo rigorous security audits for your entire app, only for the payment terminal itself. 2. How do I bridge a web-based kiosk app with local payment hardware? Many modern kiosks, such as those built on AonpoTech’s Intel-based PK1851 terminals, run on web technologies (HTML/React). To communicate with a local USB or Serial card reader: Use a Local Agent: Run a small background service (in C# or Node.js) on the kiosk OS that listens for WebSocket requests from your web app and translates them into hardware commands for the SDK. Browser-to-Hardware: Utilize the WebUSB or WebSerial API if your payment provider supports direct browser communication. 3. Does my kiosk hardware affect the SDK integration? Absolutely. The stability of your integration depends on the OS compatibility and peripheral support of the kiosk. Android vs. Windows: AonpoTech kiosks support both RK3568 (Android) and Intel J4125/i5 (Windows) configurations. Ensure your chosen SDK provides a library for the specific OS you are deploying. Modular Expansion: Kiosks like the AonpoTech APK06 feature modular designs, allowing you to easily swap or add NFC readers, thermal printers, and QR scanners, which must all sync with your SDK logic. 4. How do I handle "Unattended" payment compliance? Integrating a mobile SDK (like a standard phone-based reader) is often a violation of terms for kiosk use. You must use a solution specifically certified for Unattended Use. Ensure the hardware is PCI PTS (Pin Transaction Security) certified. The SDK must support "Heartbeat" monitoring to alert your server if the payment module is disconnected or tampered with. 5. Can I integrate QR Code payments and Card payments in the same SDK? Most modern SDKs (like Adyen or Stripe) support "Unified Commerce." However, if your kiosk uses a dedicated QR scanner (standard in AonpoTech models), you may need to handle the QR scan via a local hardware driver and then send the payload to your payment gateway’s API for authorization. Step-by-Step Technical Integration Workflow Hardware Selection: Start with an industrial-grade kiosk like the AonpoTech Smart Digital Kiosk. Its capacitive touchscreen and built-in 80mm thermal printer provide the necessary interface for payment receipts. SDK Initialization: Load the provider’s library (e.g., .dll for Windows or .aar for Android) and initialize the connection to the payment terminal using the COM port or IP address. The Handshake: Implement a "System Check" on startup to ensure the printer has paper and the payment terminal is online before allowing a user to start an order. Transaction Loop: * Kiosk app calculates the total. App calls the SDK startTransaction(amount) method. SDK takes over the screen or terminal UI for PIN entry/Tap. App receives a JSON response with the transaction ID. Receipt Generation: Use the kiosk’s integrated thermal printer to print the transaction record, ensuring you include the mandatory fields required by the payment provider (AID, TVR, etc.). Why Choose AonpoTech for Your Payment Kiosk Project? Integrating software is only half the battle; the hardware must be resilient. AonpoTech’s self-service kiosks are designed with developers in mind: High Performance: With options up to Intel i7 and 16GB RAM, your kiosk app and payment SDK will run without lag. Modular Flexibility: The APK06 series responds to modern business needs by allowing different modules for different solutions (NFC, Scanning, Printing). Industrial Durability: Waterproof and modern designs ensure that your payment terminal remains functional in high-traffic environments.

We’ve been working closely with kiosk software companies for more than three years. During this time, we’ve seen the challenges developers face when integrating different hardware modules — from touch screens to printers and payment devices. That’s why a complete Kiosk Hardware SDK (Software Development Kit) and API (Application Programming Interface) are essential. They help software connect smoothly with hardware, reduce errors, and speed up deployment. At Aonpos, our goal is to help software companies focus on their products — not on troubleshooting hardware.Many development teams struggle with unstable device communication, driver conflicts, or limited documentation. After supporting dozens of integration projects, we realized that developers need two things above all: clear SDK documentation and consistent API behavior across all hardware modules. 1. Why SDK & API Integration Matters In every self-service application — payment, ticketing, healthcare, or government — the connection between software and hardware determines performance.A stable SDK ensures your kiosk system runs reliably without extra layers of coding or configuration. 2. What the SDK Offers Our SDK is designed specifically for self-service kiosk integration, supporting both Android and Windows platforms.It provides access to multiple devices through one standardized interface. Module Function Example Access Touch Screen User interaction Multi-touch event API Printer Ticket or receipt printing Print command API Barcode Scanner Code scanning Trigger / read API NFC / RFID Payment or card reading Read / write API Camera Image or ID capture Capture API With the Aonpos SDK, developers can integrate these modules quickly and maintain consistent performance across all terminals. 3. Simple Integration Workflow Download SDK and Documentation – Includes API reference and sample code. Connect Hardware – Choose the modules required for your software. Implement API Calls – Integrate using Java, C++, or Python. Test and Deploy – Validate communication and finalize your software. Our engineers provide remote support, firmware updates, and testing assistance throughout the integration process 4. Developer Support & Customization Aonpos offers complete SDK documentation, demo tools, and firmware customization based on project needs.Whether you’re developing a payment kiosk, ticketing terminal, or ordering system, our SDK helps you integrate faster and maintain long-term stability. With our Kiosk Hardware SDK & API integration, developers can focus on building great software — while we ensure the hardware works perfectly in sync.