Tracking input in a screen-reflective interface environment

A device comprising:

• a first side;
• a second side, the second side opposite the first side;
• a display screen disposed on the first side;
• a screen-reflective interface disposed on the second side, respective positions on the screen-reflective interface corresponding to respective locations of the display screen;
• and
• a detection unit configured to:
• monitor the screen-reflective interface;
• display an image of one or more fingers at one or more locations of the display screen that correspond to one or more positions currently being touched on the screen-reflective interface by one or more fingers of a user;
• detect a touch input comprising a user touch contact with the screen-reflective interface at a first position on the screen-reflective interface;
• detect a press input comprising a user press contact with the screen-reflective interface at a second position on the screen-reflective interface;
• and
• simultaneously display first and second interface icons on the display screen, the first interface icon displayed at a first location on the display screen that corresponds to the first position of the user touch contact with the screen-reflective interface, and the second interface icon displayed at a second location on the display screen that corresponds to the second position of the user press contact with the screen-reflective interface, wherein the first and second interface icons are different and visually distinguish the press input from the touch input.

A device comprising:

• a first side;
• a second side, the second side opposite the first side;
• a display screen disposed on the first side;
• a screen-reflective interface disposed on the second side, respective positions on the screen-reflective interface corresponding to respective locations of the display screen, the screen-reflective interface comprising:
• a touch sensitive component;
• and
• a pressure sensitive component comprising:
• first and second electrical contacts comprising conductive material;
• and
• an elastic material positioned at least partially between the first and second electrical contacts biasing the second electrical contact away from the first electrical contact, the elastic material being compressible upon application of pressure to the touch sensitive component by a user to create electrical contact between the first and second electrical contacts;
• and
• a detection unit comprising:
• a touch detector configured to monitor the touch sensitive component and sense a touch contact on the screen-reflective interface and, in response to the touch contact, activate a tracking state in which a first interface icon is displayed on the display screen at a location corresponding to the touch contact;
• and
• a pressure detector configured to monitor the pressure sensitive component and detect a press contact above a threshold force on the screen-reflective interface and, in response to the press contact, activate an engaged state in which a second interface icon is displayed on the display screen at a location corresponding to the press contact, the first and second interface icons visually distinguishing the press contact from the touch contact.