What is the correct way to restrict app visibility on Google Play to devices that have a camera?

Question:What is the correct way to restrict app visibility on Google Play to devices that have a camera?

1.<uses-feature android:name="android.hardware.camera"/>

2.<uses-feature android:name="android.hardware.camera" android:required="true" />

3.<uses-feature android:name="android.hardware.camera.front" android:required="true" />

4.<uses-permission android:name="android.permission.CAMERA"/>


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