paul landau is chief executive and founder of ca reology, and hejoins us now. health tech space for about 15 years and in 2015, my wife was diagnosed with hodgkin's lymphoma, which is a blood cancer and it was so obvious to me there we re and it was so obvious to me there were real opportunities to leverage technology to better support somebody going through a cancer pathway, but also to connect them to their immediate network around them to help make sure the individual being treated feel safe and in control as they go through treatment. also to make sure the people around them know how they are. explain how this works. you have your smartphone and this device you hold that measures your temperature, took us through how it works. there are two types of technology we are using. we are using devices and sensors to track your physiology in real—time. for example, this device is a temperature patch, which i wear under my arm and it is bluetooth enabled so constantly streaming my temperature. from an apple watch, i can check my heart rate and activity levels, makin