Abstract: A device for analyzing eye data captured via the device, the device configured to perform the steps of (a) displaying an advertisement and other content on the display; (b) capturing one or more images using the camera, wherein the one or more images depict at least one or more eyes of a user of the device; (c) detecting the one or more eyes in the one or more captured images; (d) determining based at least upon the one or more captured images that the one or more eyes are focused for a predetermined amount of time on the advertisement as opposed to the other content; and (e) based upon the determination in step (d), displaying on the display an item contextually related to the advertisement and different from the other content, wherein the item is (i) text; (ii) a picture; or (iii) a video.