Introduction:

This document provides a detailed overview of the Payment Soundbox devices and their associated processes. It covers the scope, process flow, specifications, and functionalities required for successful implementation. iServeU Technology Pvt. Ltd. (iServeU) supplies QR Soundbox devices to entities, enabling secure and seamless transaction experiences. The end-to-end process includes user onboarding, device mapping to User VPA IDs, real-time transaction callbacks, notifications, and integration with MQTT servers to ensure reliable data exchange. These components collectively deliver a smooth user experience, with audible confirmation for successful transactions.