Patients can walk about while vital health signs are displayed at the nurse's station. A computer can guess if trouble is developing and alert the staff. Only the signal needs to be collected from the patient while the expensive interpretive equipment can be stored elsewhere and multi-tasked with other patients. The question comes to mind: How is data security and could someone hack your heartbeat?
The test at Barnes-Jewish Hospital in St. Louis was imperfect since people wandered in and out of range, and gestures and even nail polish affected results. Science Daily News.
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