Your next Fitbit or Pixel Watch could monitor your mental healthWould you want your watch to warn you if you're showing signs of depression? Google and Fitbit made plans to test for that, but it would need to collect a lot of data about you to do so.
Source: Your next Fitbit or Pixel Watch could monitor your mental health (https://www.androidcentral.com/wearables/fitbit-patent-shows-plans-to-monitor-mental-health)