Wearables and tracking tags are being used more frequently in a wider variety of workplaces to collect statistics on employee productivity, health and satisfaction — tracking the performance of professional athletes, helping doctors get to hospital patients quicker, and even monitoring stress levels of office workers. Daniel Rainham, associate professor and wearable sensor researcher at Dalhousie University, said in a phone interview that wearable sensors and trackers have been used for many years in manufacturing processing fields and industrial environments. Now, he said,...