1. A method comprising: initiating an emission, by a computing device, of at least one light beam; receiving, from an image capture device coupled to the computing device, an image of a face; identifying at least one representation of an eye in the image of the face; determining, by the computing device, whether at least one reflection of light from the light beam is associated with the representation of the eye in the image of the face; and determining, based at least in part on whether the at least one reflection of light from the light beam is associated with the representation of the eye in the image of the face, whether to deny authentication of a user with respect to accessing one or more functionalities controlled by the computing device.