Kohji Mitsubayashi received his Ph.D. from The University of Tokyo in 1994. Since 2003, he has been a Professor at the Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University. His research interests include wearable biosensors, gas sensors for non-invasive bio-monitoring, and novel battery-free artificial organs (pancreas, muscles) with “Organic Engine.” He has proposed a new device category “Cavitas sensors” in human body cavities for real-time biomonitoring such as “Soft contact lens glucose sensors”, “Telemetric mouthguard sensors with a Bluetooth transmitter”, etc. In 1988, he also started to develop several types of gas-phase biosensors (bio-sniffer, sniff-cam). They allow to real-time sensing and imaging of target volatiles in exhaled air, skin gas with good sensitivity, gas-selectivity, and in-sensitivity to humidity. Recently, the novel sniff-cam with a UV-LED ring light has been achieved to real-time imaging of transcutaneous volatiles (ethanol and acetaldehyde) after drinking. He has published more than 240 peer-reviewed research articles in International Journals and 20 books including “Chemical, Gas, and Biosensors for Internet of Things and Related Applications” (first editor) on Elsevier publisher in 2019 (AAP’s 2020 PROSE Award in the Chemistry and Physics category by the Association of American Publisher (AAP).