If you can't make it to the doc as soon as you'd like, this pocket-sized gadget can help you get an idea about what's up with your body—right at home. Hold the Scanadu SCOUT to your temple and the device reads five vital signs, including body temperature, pulse, and heart rate variability. This data is then sent to a corresponding smartphone app, which is still in the works but will feature an analysis of your symptoms, a diagnosis, and suggested treatment. ($150, scandu.com)
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