In recent years, China’s retail business has developed rapidly. Chains and stores are looking to the Internet of Things (IoT) solutions to optimize the user experience. We have received an invitation to participate in a project of establishing a smart store in China, with the main idea of the project being O2O and guided shopping. The stores provide Wi-Fi so consumers can shop on their smartphones. At the same time, the shopping carts are equipped with the IEI IOVU series to help consumers locate the desired products and their prices. Additionally, the TANK-860-QGW acts as a micro-server hosting POS and inventory software. Even if the network goes down, the store will continue to provide service.