In order to measure your heart rate, all you have to do is hold your finger over your Pixel phone’s rear camera lens and apply a little bit of pressure. The Google Fit app will detect the pulse in your fingertip to measure your heart rate. However, Google advises in clear words that the heart rate readings taken by the camera are not intended for medical use, as so is the respiratory rate calculated using the front camera.
In order to measure the respiratory rate, you’ll have to keep your Pixel smartphone on a stable surface and then sit still in its view. Now, the Google Fit app will monitor the movement of your chest cavity as you sit still and breathe, and will then present you the respiratory rate in breaths per minute. Google recommends that if you’re wearing masks or hats, they should be removed for accurate results. Additionally, if you’ve just finished a vigorous physical activity, you should take some rest and return your breathing to a normal level before taking the reading.
Once you’ve taken your heart or respiration rate reading, you can choose to save it in the app as a health log for a lengthy assessment over time. And in case you’re worried about the privacy of your health data. Google assures that the video stream used for measuring the heart and respiratory rate is processed on-device and in real-time, which means no data is uploaded to Google’s servers.
You can watch the video below on how to measure your heart or respiratory rate via the Google Fit app using only your Pixel smartphone’s camera: