You should cover your phone's selfie camera, too

Take a look at your smartphone. Perhaps you're reading this story on it, and the device is planted firmly in your hands. Maybe you're on your laptop, and your phone is resting face up on your desk. Now, focus your attention on the phone's selfie camera. Try to imagine what's in its field of view. 
Unless your phone's forward-facing camera has a cover on it, you may not be the only one with that picture in their mind — or on their computer screen. Unless, that is, you have a selfie-cam