Video cameras installed in the Sumatran jungle have captured close-up footage of a tiger and two cubs. This is the first time that WWF has recorded evidence of tiger breeding in central Sumatra in what should be prime tiger habitat. While a "camera trap" might sound menacing, it actually does not harm wildlife. The name is derived from the manner in which it "captures" wildlife on film. Camera traps are not the intricate and elaborate devices you might imagine. These innovative conservation tools are in fact nothing more than everyday cameras, armed with infrared sensors that take a picture or a video whenever they sense movement in the forest.