An Important Class of IoT Devices

nternet of Things (IoT) refers to a large class of devices that can be sprinkled throughout a region of activity where we'd like the sensors to capture detailed information about the interesting region. The 'region' could be a farmland, a bridge, railroad tracks, structural parts of aircraft, and almost anything where there is interest to understand any measurable activity. The sensors achieve particular value if they are completely passive, i.e., do not require battery or any power that requires manual replenishment. The sensors are able to provide important site-specific data than can then be transmitted over the Internet, stored, analyzed, and harvested for important macro observations that could be gleaned from such data, sometimes also known as Big Data.