Abstract: Systems and techniques for providing a three-dimensional touch screen are described. Example systems include a touch screen manager that is configured to display a screen via a display device, such as by projecting on a wall or other surface a screen generated by a computing device, such as a desktop, laptop, or tablet computer. The manager is further configured to receive position information from a sensor that determines the positions of objects, such as the finger or hand of a user, within a three-dimensional space in front of the display surface. The manager then converts the received position information into user interface events, including gestures (e.g., pinch, swipe), mouse-type events (e.g., click, drag), or the like. The user interface events are provided to an application or other module executing on the computing device.