1. A method comprising: receiving, by one or more processors of a device, an image of a user; comparing, by the one or more processors, the image to a collection of images, the collection of images including a known image and a group of seed images; determining, by the one or more processors and based on the comparing, whether the image of the user more closely matches the known image or a seed image, the seed image being included in the group of seed images; and selectively identifying, by the one or more processors, the user as a known user, the one or more processors identifying the user as the known user when the image of the user more closely matches the known image, and the one or more processors not identifying the user when the image of the user more closely matches the seed image.