1. A method comprising: displaying an image on a lock screen of a computing device when the computing device is in a locked state, wherein the image is rendered from a digital image file; detecting, by the computing device, a user input to the computing device while the image is being displayed on the lock screen; and responsive to the detecting of the user input while the image is being displayed on the lock screen, (i) transitioning, by the computing device, from the locked state to an unlocked state and (ii) classifying, by the computing device, the digital image file in accordance with the user input, wherein classifying the digital image file in accordance with the user input comprises an action selected from the group consisting of (a) meta-tagging the digital image file with meta-data defining a classification of the digital image file corresponding with the user input, wherein meta-tagging the digital image file with the meta-data comprises writing the meta-data to embedded Exchangeable Image File Format meta-data of the image file and (b) moving the digital image file to a user-accessible folder corresponding with the user input.