With the advent of various malicious smartphone apps in recent times, users have begun to worry about their security more than ever. Especially when the information appeared in the public that the Facebook mobile application will use the front camera of the phone to "read" the facial expressions of the user and thus personalize the content (read: advertisements). I already wrote about it recently - link.
For this purpose, the CamShield application was created, which is in charge of notifying you when the service in the phone uses the camera. This app monitors the status of the camera, both front, and rear, and displays a notification if either of these is turned on. The notification appears at the top of the screen and in the notification panel, and the used camera (front or rear) is highlighted.
According to the authors, they are aware that big companies are spying on us in all possible ways, and mobile phones are one of the best. They also state that the application is optimized for the battery and will not affect consumption, and it works on almost all Android devices.
If you remember, I wrote an article on how to find out which process uses a camera in a computer, and here this option is even more necessary since cameras on phones do not have any indicator when they are used (as is the case with laptops and separate cameras).
The application does NOT require Root, but only Accessibility to display notifications above other applications. So the chances are very high that it will work on your phone. With all that, it's completely free.
https://play.google.com/store/apps/details?id=in.turingmachine.noshow
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