Multiple Heart Rates Monitoring using Smart Phones

Heart rate is one of the important vital signs that monitor cardiovascular disease or control exercise intensity. There are a lot of studies to use heart rate to monitor people’s health status and provide rapid feedback. However, these studies are usually limited to monitor heart rates for an individual at a time. In this paper, we develop a system to allow simultaneous heart rate monitoring for several users who are wearing a wearable heart-rate monitor using an Android smart phone. It provides several useful functions such as setting the candidates to be monitored, monitoring heart rates by graph views, alternating graph views over several users by window touching, and storing and retrieving heart rates on the fly.