Having the option of getting biometrics when you stick something in your head doesn't prevent getting data other ways too. Me, I listen to podcasts for an hour a day or so while my phone is in my pocket and the only thing touching my body directly is the earbuds. It'd be easy for the phone to be passively collecting data during that time - any time I'm listening to something via headphones - and it wouldn't require me to change my behavior or carry yet another device around.
I live in New York, so I listen via earbuds while I take the subway. In California a lot of people listen via earbuds while they go jogging or work out at the gym. There are almost certainly enough people who listen via earbuds daily to make that feature "a mainstream success", even if it doesn't match your own use case. If you never use the earbuds, you don't have to buy the earbuds that do biometric monitoring. Or you can ignore that feature.
There already exist apps that check your pulse (using the camera) and that check your sleeping patterns (you leave the phone charging on your bed; it uses the motion sensor). This would be just one more option along those lines.
But I'm curious: What would you consider "a good solution to this"?
I live in New York, so I listen via earbuds while I take the subway. In California a lot of people listen via earbuds while they go jogging or work out at the gym. There are almost certainly enough people who listen via earbuds daily to make that feature "a mainstream success", even if it doesn't match your own use case. If you never use the earbuds, you don't have to buy the earbuds that do biometric monitoring. Or you can ignore that feature.
There already exist apps that check your pulse (using the camera) and that check your sleeping patterns (you leave the phone charging on your bed; it uses the motion sensor). This would be just one more option along those lines.
But I'm curious: What would you consider "a good solution to this"?