1. A portable electronic device, comprising: an image sensor configured to capture at least one image; an optical output device; a processing device coupled to the optical output device, the processing device being configured to: retrieve geographic information associated with the at least one image; identify, based on the geographic information, at least one contact included in a set of contacts of the portable electronic device, the at least one contact having captured at least one other image in a geographic area in which the at least one image was captured; and control the optical output device to display an identifier for the at least one contact.