At the start of 2021, Google released the capability to check vitals instantly on your Android. Google Fit on iPhone has also received the same capability to calculate your heart and respiratory pace utilizing cameras.

Heart rate measures start by putting your finger on the rear-facing camera lens and giving slight pressure. There’s also the option to turn on flash to improve accuracy in dim places, or you can put your hand in front of a light source.

Google follows the “minute shifts in the hue of your fingers” to correspond blood flow, with the heart rate algorithms. It functions offline too, taking nearly 30 seconds. Meanwhile, the front-facing camera is used to follow the number of breaths you take per minute. Users are guided through the process. Google Fit calculates your breathing rate from subtle chest movements, with computer vision following the tiny physical signals at a pixel level.

The Google Fit app has great capabilities and the fact that they came up with this feature is just phenomenal, the fact that they can do it with just the camera and a free app that you can just download. It came out to Pixel phones and other devices picked it up after that. I’m certainly using this feature but I won’t let them save it, you can’t trust data with Google