In MobiCare, a body sensor network and health care servers employ short-range Bluetooth between
the BSN and BSN manager and GPRS/UMTS cellular networks between BSN manager and health care
providers. CodeBlue is the only existing project that employs wireless sensor networks in emergency
medical care, hospitals and disaster areas as an emergency message delivery system. With Mica motes,
CodeBlie uses pulse oximetry and electrocardiogram sensors to monitor and record blood oxygen and
cardiac information from the large number of patients.