A new PPG sensor could bring blood pressure monitoring to phones and wearables

The tiny little thing in the picture above is a new photoplethysmography (PPG) sensor made by the company Valencell. You’ve probably never heard of these guys but they design and build various sensors for wearable devices that measure heart rate and blood oxygen levels. The new sensor, though, has a different purpose - to bring blood pressure monitoring to phones and wearables. Normally, to measure a person’s blood pressure, you need a big device that cuffs around your arm. The new sensor from Valencell combines data from the heart-rate sensor and the embedded accelerometer and via clever ...
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