CASE 3

Used-Device Purchase Management System

A streamlined system documenting pre-owned device trade-ins and automatically dispatching customer verification via WhatsApp

Live Interactive Demo Workspace

/demos/used-devices-system/index.htmlFull screen

Fully interactive preview — try the controls inside as they are

Results & Operational Metrics

100%Electronic Documentation

Instant PingWhatsApp Confirmation

24-HourFollow-up Automated Reminder

Smart RoutingDisputes Sent Directly to Staff

Business Challenge

Purchasing devices without centralized, traceable documentation risked customer disputes and inventory discrepancies

Objectives

Document 100% of purchase transactions digitally and auto-confirm instantly with customers

My Role

Requirements analysis, schema design, REST APIs, frontend, WhatsApp API & Webhooks integration, role permissions, and QA testing

Implementation

Real-time transaction logging, automated WhatsApp receipt dispatch, 24-hour reminder ping, and automated dispute ticket routing

Tools & Technologies

REST APIs, WhatsApp API, Webhooks, Relational DB

Business Impact

Immediate operational documentation proved drastically safer and more cost-effective than resolving disputes post-factum