watchOS 7 to Apple Watch, you can turn on "Automatic Hand Washing Detection"
September 21st 2020
In the just-launched watchOS 7, Apple has also added the "Automatic Hand Washing Detection" function to Apple Watch . By calling the Apple Watch's motion sensor and microphone, when it detects that the wearer is washing hands, it will automatically start a 20-second hand washing Countdown .
After updating Apple Watch (Series 4 and above) to watchOS 7, you can enable this feature on iPhone and Apple Watch:
On Apple Watch, go to "Settings> Hand Wash" and turn on "Hand Wash Timer";
On the iPhone, go to "Watch app> Hand Wash" and turn on the "Hand Wash Timer". If you enter your address in your address book, you can also turn on the "Hand Wash Reminder", and Apple Watch will remind you to wash your hands in time when you get home.
From the experience point of view, the "automatic hand washing detection" function of watchOS 7 can help me to grasp more accurate hand washing time to a certain extent, but because the motion sensor and microphone of Apple Watch are used as the basis for judgment, that is, as long as " Hand moving + hearing the sound of water", this function will be triggered automatically, so there is a certain false touch rate.
Moreover, the triggering speed of "Automatic Hand Washing Detection" is also a bit slow. Sometimes the countdown is displayed after half of the hand washing process, causing the hand washing time to be extended to 25-30 seconds.
However, I still recommend that you turn on this function after upgrading to watchOS 7 (default is off), at least washing your hands for a longer time can bring a more effective cleansing effect. In addition, the iPhone's health app will also count the hand washing data, so that you can see the average hand washing time and the number of hand washing more intuitively, and the popular science knowledge about hand washing will also be listed under this page.
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