About the size of a computer mouse, a CPOD is worn around the waist. It’s comfortable enough to be worn while sleeping. It’s non-invasive. It takes only minutes to don. Importantly, it can track a person’s physiologic functioning as they go about their normal routine — they don’t have to be tethered to some stationary device. It can store data for eight-hour periods for later downloading; alternatively, it can send it wirelessly, in real time, to some other device.
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The CPOD typically tracks heart performance, blood pressure, respiration, temperature, and blood oxygen levels. Using three tiny accelerometers, it also tracks a person’s movements — it can tell whether they’re running, for example, or spinning or tumbling.
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Using the CPOD, EMT’s at an accident scene could quickly gain information about a victim’s condition. CPODs could monitor the blood oxygen levels of firefighters inside burning buildings. Physicians could use CPODs for “outcome monitoring,” using them to track a patient’s reactions to a particular procedure or drug. Athletes, like divers and mountain climbers, could use them to keep track of their exertion levels. The CPODs could help monitor pollution, and even treat soldiers on a battlefield.
looks a little clunky now..

but, like it won’t be minaturized to something like a quit-smoking patch in a couple of years..
Then parent’s can monitor their kids and doctors/pension-plans can monitor the aged/elderly..