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A really cool feature of Android 11 would have been the double tap, but Google has decided to expand the feature again for some reason. The principle behind it is simple: you double tap the back of the smartphone with your finger and a certain action is triggered, for example a screenshot.
This can be updated with the small Tap app, Tap for any Android smartphone from Android 7. You can freely determine which app should be opened or what action should be performed when the touch gesture is activated. The Android app also supports triple tap, which can be assigned another action.
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