FLIR, or Forward-Looking Infrared, is used by military personnel to "see" in the dark without having to don those bulky night-vision goggles; at the Association for Unmanned Vehicle Systems International (AUVSI) expo in Washington D.C., a company aptly named FLIR showed off a protoype of a commercial product for the Apple iPhone...
Source: http://www.phonearena.com/news/Infrared-camera-coming-to-the-Apple-iPhone_id46627
Source: http://www.phonearena.com/news/Infrared-camera-coming-to-the-Apple-iPhone_id46627