Countries around the world are taking on IoT (Internet of Things)-related initiatives, and an increasing number of corporations are placing the creation of value through interconnectivity of IoT devices and relevant systems (IoT devices and systems) as one of their major business strategies. If IoT becomes popular in a specific sector, we can expect it to spread to other sectors for increased convenience and cost reduction. However, it does not mean that the IoT-related initiatives are completed and flawless just by connecting all IoT devices and systems, sharing information, and controlling these devices and systems. It is necessary to give careful consideration to safety/security/reliability, with due deliberation given to new risks and threats that may arise from this interconnectivity. Also, when developing IoT devices and systems intended for just a specific sector, their lifespans may be shortened for several reasons, including having to redesign the IoT devices and systems, unless if there is a design or road map for future use in other sectors