The app will play a realistic sound of an electric razor and will show a live view of the device's built-in camera. You will see a live image of the razor, and you can even adjust the color and thickness of the hair. To make the simulation more realistic, you can also adjust the angle of the view of the device's camera. When you turn on the virtual shaver, the app will begin to play a very lifelike sound of a shaver in use. All you have to do is get close to the hair on your head or beard using a clipper. If the phone touches your body, the simulator can tell since it employs a proximity sensor and image processing of a camera view. You can even turn off the sound and the vibration. The app will also show an animation of hair being cut and falling.