According to Patentlyapple, Google has been granted a number of new patents, including the ability to allow the back or side of the phone to perceive the user's work, so that these two areas can also be turned into touch "screens".

Current smartphones are done by touching the screen, but touching may also block the screen, so this function specially developed by Google allows users to gesture and touch from the back of the phone, such as fast-forward/rewind video, horizontal/vertical screen switching screen, and even adjust the volume, now you don't need to use another hand to help, just swipe a few times behind the back. This technology can also be extended to tablets, laptops, e-book readers, smart speakers, smart watches, and even car navigation, Xiaobian thinks it may be more helpful for products with larger screens, while keeping both hands in the case, 8 fingers are on the back, and you can control it without switching to the front, which is more convenient.

How? The principle of this technology is to detect the "input" of the user's finger through the sensor shell of the mobile phone, and then generate a "map" of the input location, and then use the machine learning model to identify what gestures the user has made, such as touching, swiping, tapping, etc., and distinguish whether the user has accidentally touched, so as to correlate what action the mobile phone will perform. It may be better than my iPhone 2 to be able to identify the wrong touch, and I used to set the back to tap 0 times to take a screenshot, but it often clicked on the desktop to take a screenshot of the phone, and I opened the album to see a lot of inexplicable screenshots.

However, Google's idea is not the latest, in fact, as early as 4 years ago, there was already a product that took into account the field of back touch, it is called HandyCase phone case. Its back is a Bluetooth trackpad,It will be divided into 0 big buttons when playing,You can press the shutter by touching the back when taking pictures,You can even take it off as the full keyboard of the phone,The idea was quite avant-garde at the time,It's just that it may be too advanced.,Now it's gone in the wind.。