The Apple Watch, especially the Apple Watch Series 4, has become an almost tiny diagnostics lab that has helped save dozens of lives. Despite that, it ironically lacks one feature that has almost become a staple on fitness trackers and smartwatches. Apple Watches still don’t do sleep tracking, a feature that was initially expected to land sometime in 2020. Fortunately, it seems that Apple is finally satisfied with an option that will allow even existing Apple Watches to offer that feature without requiring new hardware.
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https://www.slashgear.com/apple-watch-sleep-tracking-coming-this-year-no-special-hardware-needed-02589589/
