“…including Wireless Sensor Networks [19,56,57,71,74,77,80,[95][96][97][98], sensor arrays [29,85], RFID (Radio-frequency identification) [11,41,73,91], different motion sensors [19,57,62,74], and other dedicated sensors like chair sensors [74,76], image processing occupancy sensors [93], RH and temperature sensors etc. [29,85,86].…”