1. A method for triggering input commands of a program run on a computing system, comprising: defocusing an image capture device that is placed in a direction of a display screen; monitoring a field of view in front of the image capture device; identifying a light emitting diode (LED) light source within the field of view, the (LED) light source being pointed in the direction of the image capture device, the identifying being done from a defocused image produced by the image capture device having a diffuser, such that defocusing the image capture device produces an expanded region of pixels around captured light of the (LED) light source; tracking the (LED) light source as it is moved, the expanded region of pixels around the (LED) light source increasing pixel data usable to identify the (LED) light source during the tracking, and the display screen illustrating objects that can be interacted with; detecting a change in light emitted from the (LED) light source; and in response to detecting the change, triggering an input command at the program run on the computing system, the input command acting to interface with one or more objects illustrated on the display screen.