Privacy Indicators for Android is an accessibility service. It allows you to see if the front-facing camera and microphone are being used at any given time. This can be used to alert you to unwanted audio or video recording, or even screen capture.

How can you use it?

It's a great way to know when the front-facing camera and microphone are being used. To enable it, you need to enable the accessibility service in the Android system settings. You can then customize the indicators as you see fit. The color and position of the indicators can be changed as well.

It's a service that runs in the background. It will automatically start up even if you restart your device. It will also work on devices that have FOSSHACK or Xiaomi MIUI.