1. A method comprising: capturing, by an image capture device coupled to a computing device, an image of a face of a user; detecting, by the computing device, whether a distance between the image capture device and an object represented by at least a portion of the image is less than a threshold distance; and when the detected distance is less than the threshold distance, denying authentication of the user with respect to accessing one or more functionalities controlled by the computing device, wherein the authentication is denied independent of performing facial recognition based at least in part on the captured image.