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I have a Oneplus 6 and it has this super cool functionality wherein I can draw certain gestures on the turned off screen and it opens up apps and other stuff. For example: drawing a circle switches on the flashlight, drawing an S opens the camera and a few others. I also noticed that other phones do not have this functionality and wanted to build an app for the same. I searched across the web and couldn't find a solution. The majority of the posts gave the following insights:

  1. It couldn't be done since touch recognizer is off when screen is off.
  2. We might have to alter the kernel for this and should be done from a manufacturer's standpoint.
  3. Turn the screen black and recognize gesture. (Only works on OLED displays and its not what i want).

This is my use-case. If anyone has any knowledge on this matter please let me know how it can be done. Thanks in advance for the help.

PS - There are a lot of posts with this same topic. Please don't repeat those answers. If it's a NO please specify the exact reason why.

willy wonka
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Kevin Mathew
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  • You already listed the reason why it is a NO yourself. What more do you need? – cloned Sep 02 '22 at 10:49
  • @cloned - I am not sure what you mean. I listed the the answers I saw on the internet regarding this. But I have this functionality on my phone. So I know there is a way to do it . I am also open to a definite NO, is what I am saying (with the proper justification). – Kevin Mathew Sep 04 '22 at 05:35
  • You can do this on your phone because your manufacturer altered the kernel. So if you want to program it, do the same. – cloned Sep 04 '22 at 12:17

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