ETag is located in Hong Kong. Since 2013, we provide BIM data management, IoT, real time location tracking (RTLS), M2M message bus and IoT consultancy service. We deliver the infra-structure to enable the Internet of Things (IoT) connectivity and BIM CDE framework.Internet of Things (IoT) is an adoption of advanced technologies spanning from sensors, automatic identification applications, smart devices, different kinds of network grids such as telecommunication and transportation etc., to various kinds of user-oriented applications supported by the Internet backbone.