When I go to the descitption of a certain app that have android.permission.CAMERA in application inspector it says : "...to take photos and videos at anytime"
I find it confusing and would like to know if anytime refers to anytime when the app is active i.e. open, or any time like it can activate it self in a background process and access the mentioned device.
The only doc i could find is https://developer.android.com/training/permissions/usage-notes but it does not answer my question.
It is possible to take pictures/videos without showing the preview. But it is complicated depending on the android version. There is even a libary which handles it: