Pushing the Digital Notice Board toward Ubiquitous Based on the Concept of the Internet of Everything

Recently, digital notice boards have demonstrated their Internet of Things (IoT)-ready advantage and competitiveness in message publishing environments (e.g., smart campus environments or bus stations). However, current digital notice applications do not capture the context of daily life usage behavior and scenarios, and input devices, boards, notices, and the experience of human beings are all separate. This paper proposes an interactive message exchange architecture based on the Message Queuing Telemetry Transport (MQTT) protocol that deeply involves users in the IoT process. In this design, users can post notices from handheld devices to any supported display device or social media through a topic naming mechanism based on a subscribe/publish (sub/pub) model. Users can decide which notice to address. Messages of interest to the user will be integrated into a personal knowledge base. This paper also provides a demonstration of an integrated system for a smart campus.