Samsung phones used to be able to measure heart rate along with blood oxygenation. Not sure when they stopped, but I know one of my old galaxy's had it, either the 5 or 8.
Comment on ELI5: how do mobile devices know your movements?
solrize@lemmy.world 1 month ago
Step counters use the phone accelerometers which the phone also uses to notice it’s own orientation. I haven’t yet seen a phone that can detect your heart rate by itself. Some watches can do it using an electrical sensor (electromyograph) on your wrist, and send the info to your phone by Bluetooth.
Irremarkable@fedia.io 1 month ago
meco03211@lemmy.world 1 month ago
I think it had to do with how the cameras and lights were oriented. I missed that one too. Pretty damn accurate.
Irremarkable@fedia.io 1 month ago
Something like that, yeah. Didn't personally have an actual practical use for it, but it was certainly a nice thing to have.
markpaskal@lemmy.ca 1 month ago
I think one of the Pixels or one of the old nexus devices could read heart rate through the camera somehow, but you had to put a big fingerprint on the lense so it was useless to most people.