The product we're working on in the background is a wearable hormone monitor that actually shows you at the molecular level how much sunlight impacts your hormones - we've found this to be the most powerful lever for behavior change. But in the meantime, we have been using the saying "you can't improve what you can't measure" to help people get more sunlight.
Yeah unfortunately you have to have the screen exposed for a few minutes each time you go outside.
I spoke to the team at Apple, they said as long as you have a couple of minutes in the sunlight while you're on a walk it will then use sensor fusion to count the rest of the time outside.
Thanks
(1) You can join the waitlist for our hormone tracking device, the app is available for download today on TestFlight. Eventually the app will be used to show you the connection to your hormone balance (like cortisol etc.) and your light exposure. They are very tightly linked!
(2) there is a light sensor in the display of the Apple Watch that automatically tracks it. It works ~80% of the time, but struggles if you have a big jacket
Most people have their phone in a pocket or purse or similar while outdoors. Wouldn't this require the phone to be out and exposed to light in order to work correctly? So not only are you trying to get people to change habits of getting outside, you're also requiring they change habits with the devices as well. Good luck with that, and I mean that with more sincerity than snark but not no snark.
The light sensor is in the Apple Watch display (behind the screen) it's what it uses to adjust the screen brightness. So if it's exposed to the sun it will count it automatically
The product we're working on in the background is a wearable hormone monitor that actually shows you at the molecular level how much sunlight impacts your hormones - we've found this to be the most powerful lever for behavior change. But in the meantime, we have been using the saying "you can't improve what you can't measure" to help people get more sunlight.