Camera traps, also known as trail cameras, are used to capture images of wildlife with as little human interference as possible.[2] Since the introduction of commercial infrared-triggered cameras in the early 1990s their use has increased.[3] With advancements in the quality of camera equipment this method of field observation has become more popular among researchers.[4] Hunting has played an important role in development of camera traps, since hunters like to use them to scout for game.[5] These hunters have opened a commercial market for the devices which have led to many improvements over time.