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

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

Answers:

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

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

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

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