ITU‐T's Technical Reports and Specifications 261 Type Details Applicable Interface Interface for communication between the RFID reader and the applicable server system Network Network service function required in the applicable RFID service operation Data protection Data protection function required in the RFID tag/reader and applicable systems Figure 37 – RFID Elements 2.3.3 Energy harvesting Taking advantage of different forms of energy, or through strategies of collecting the passage of people, cars, differences in salinity, currents of air through small devices, etc., is something that should happen in a smart sustainable city. Energy harvesters also provide a very small amount of power for low‐energy electronics. Many sensors related to IoT, for example could feed themselves the required energy units. Role of the technology17 Environmental monitoring or reducing environmental burden of application areas using ICT in SSC requires sensing network to collect data used in those areas. To reduce the environmental burden of the sensing network itself, it is required to lessen environmental burden of the sensing devices. Sensing networks generally use an enormous number of sensing devices. Definition of the technology Energy harvesting technology is the technology that derives energy from the surrounding environment (environmental energy), such as light, vibrations, heat and radio waves, and converts it into electricity in order to move sensing devices, process signals and convey data through wireless networks without being supplied with electricity from any external sources such as batteries. Using environmental energy allows us to save maintenance costs for power cables and the replacement of batteries. Energy harvesting technology is composed of technology of generating electricity from environmental energy and that of storing the electricity that enables it to be used stably. Figure 38 – Control Technology to prevent decreased CPU performance ____________________ 17 Corresponds to a contribution of FUJITSU (Japan) by document FG‐SSC‐0032