On the Indonesian island of Sumatra, WWF collaborates with the Riau Forestry Department to use camera traps to help determine which species are present and absent in the region. 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 whenever they sense movement in the forest.