1. A system, comprising: a camera; a display; at least one processor; and memory including instructions that, when executed by the at least one processor, cause the system to: capture a first image using the camera, the first image including a first representation of at least portion of a head of a user of the system; determine a first head position based at least in part upon a location of the first representation in the first image; determine a position on the display that corresponds to the first head position of the user according to one or more triangulation and extrapolation algorithms; determine content being presented at the position on the display; cause a first action related to the content to be performed, the first action including at least one of focusing to the content, rotating the content on the display, rendering a larger or smaller font of the content on the display, or rendering one or more advertisements related to the content on the display; capture a second image using the camera, the second image including a second representation of at least portion of the head of the user of the system; determine a second head position based at least in part upon a location of the second representation in the second image; determine that the second head position is more than a threshold distance from the first head position; and cause a second action related to the content to be performed, the second action being based at least in part upon a difference between the first head position and the second head position.