1. A method comprising: controlling, at an eye tracking device, one or more light sources located within the eye tracking device to synchronize emission of light from the one or more light sources with a timing of image capture by a camera, wherein the controlling further includes filtering the light from the light sources using an infrared (IR) pass filter that allows light within an IR passband between 800nm and 900 nm to enter the camera and prevents light outside of the IR passband from entering the camera, and wherein the camera has a field of view that overlaps with a field of emission of the one or more light sources; receiving, at the eye tracking device, an image of a portion of a user captured by the camera, the image including reflections caused by light emitted on the user from the one or more light sources located within the eye tracking device; detecting one or more eye features associated with an eye of the user using the reflections; determining point of regard information using the one or more eye features, the point of regard information indicating a location on a display of a computing device coupled to the eye tracking device at which the user was looking when the image of the portion of the user was taken; and sending the point of regard information to an application capable of performing a subsequent operation using the point of regard information, wherein at least one of the camera and the one or more light sources are turned off when the user is not detected for a predetermined amount of time and are turned on when the user is detected again.