This design challenge is about creating a mechanical tap extender/adapter which can be attached to the front of a smartphone to allow the end user perform “Back Tap” actions without the need to hold the phone or access the back of the device. This can potentially be achieved using a lever arm mechanism which can be used to tap the back of the device from front or sides.
“Back Tap” actions can then be mapped to custom tasks through the Operating System.
Recently (2020), Apple has released iOS14 which comes with new accessibility features including “Back Tap” feature. This feature allows the user to perform custom tasks by double tapping or triple tapping the back of iPhone. You can also use these back tap actions to activate shortcuts or launch apps such as Google Assistant.
This feature is also available in Android 11 for new line of Pixel devices.
Apple iPhone: iPhone 8, iPhone 8 Plus, iPhone X, iPhone XS, iPhone XS Max, iPhone XR, iPhone 11, iPhone 11 Pro, and iPhone 11 Pro Max, iPhone 12 , iPhone 12 Pro, iPhone 12 Mini
Google Pixel: Pixel 4, Pixel 5
iOS 14,Android 11
Apple iPhone: The feature is available on iOS 14 via Settings > Accessibility > Back Tap.