Playing as in real world

I want to develop a game which will works on the principle of real world. As, if we want to make the camera in the game to look on the right side, we have to point the phone's camera towards the right side by turning the phone. I am not talking about tilting the phone to make the camera rotate. It will be something like, in real life if we have to see something on the other side, we have to turn our head in that side. It maybe sounds stupid but I am curious to know that is this possible in Unity? If yes, is there any example game or any script that can help. Thank you.