WeSoft was responsible for designing and developing the front-end and back-end advertising solution for a Hong Kong based marketing company. The multimedia front-end system is designed to synchronize and retrieve the media from the backend system via 3G & Wi-Fi connection and display the content to passengers sitting in the back seats of taxis. The backend system consists of scheduling and content distribution functionalities implemented using Web Services. Our engineers were assigned to work on the embedded programming and backend content management system separately and then combine them into one system. The system is currently operating in thousands of taxis servicing Hong Kong.