One embodiment of a system of present invention includes means for obtaining an image from a requester, means for obtaining contact information for vouching people, whom requester identifies as having personal knowledge of the requester, and means for sending an electronic message to the vouching people, with a link to an image lineup. The image lineup contains the image obtained from the requester and other images. The system further includes means for receiving a selection choice from the vouching people, identifying whether the image in the image lineup depicts the requester, and means for calculating a statistical rating of a likelihood that the image obtained from the requester depicts him/her.