This is a proof of concept application which detects if people are face to face with the user, if they are then it switches the phone to silent mode. If it does not detect any faces for a configurable amount of time then it turns the ringer back on. Both the amount of time that the application needs to see the face before it switches the ringer off and the amount of time it needs to not see a face to turn the ringer back on are configurable. In the demo, the application draws rectangles around other things as it tries to recognize them but the action is only triggered when the correct object is recognized.