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Recording dexterity

Cell phones could double as pocket microscopes, while smartphone videos supply information on breathing and pulse rates.

Regularly monitoring one’s blood pressure is also important – for everyone. Particularly in remote areas, it can be difficult to get a reliable measurement.

Which is why a new clip and app that use a smartphone’s camera could be a winner – thanks to a research team in San Diego.

Guided by the app, users press on the 3D-printed clip which has a hole and the visible part of the finger is lit up by the flash.

From the red dot’s size and hue recognized by the camera, an algorithm calculates systolic and diastolic blood pressure readings.

A natural fit for an emergency first-aid app.

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