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In iOS, the user must explicitly grant permission for each app to access cameras and microphones. You define which camera hardware you would like to use, how to show a preview, and where to save the files. Once the user grants the Camera Permission for an app, it is granted forever. iOS remembers the user’s response to this alert, so subsequent uses of the capture system don’t cause it to appear again. The user can change permission settings for your app in Settings > Privacy.
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