[問卦] Apple Watch是怎麼知道我已經睡著了
如題
最近開始戴潮潮必備的Apple watch
好奇測試看看裡面的睡眠功能
每天都會偵測自己睡了多久
什麼時候入眠
深眠的時間大概多長
但用著用著不禁納悶
Apple Watch是怎麼知道我什麼時候睡著了
甚至知道我現在處於深眠階段
有沒有板上科技達人可以解惑一下==
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