Apple did not spend a word on this feature on WWDC, making it an "Easter egg". However, its function is very powerful, and it feels like a huge "function button" has been added to theback of the iPhone.
how to open?
1. Open "Settings"
2. Select "Accessibility"
3. Select "Touch" in the "Action Interaction" column
4. Select the bottom "tap back"
5. You can choose "Double tap" or "Tap three times" according to the setting
Where is it useful?
The biggest highlight of this function is that it can be used in conjunction with the "Shortcut Instructions" App of the iOS system. If you use the "Shortcut Instructions" frequently, you will know its power very well. You can activate various "shortcuts" for daily use by "tap the back" without opening the "shortcuts" app for selection.
You can "tap the back" to open the office software and check in to and from get off work
Apple did not mention the principle of the realization of this function, but it is understood that this function may be realized by using the gyroscope and motion sensor inside the phone, supplemented by the blessing of the algorithm .
To say that its biggest problem is that it is easy to touch by mistake. When we use a mobile phone, it is very easy to touch the back whether it is held with one hand or with both hands. If you set this function to "screen capture", your photo album may leave a variety of screenshots.
At present, this function is not supported on the iPad, and the response speed is still relatively slow. The judgment algorithm needs to be improved. Maybe it is not originally intended for ordinary users.
All in all, this feature may be relatively tasteless for some users, but for those who know the iPhone very well, it will definitely let you play out.
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