A game camera is a device that records images, either as a still photograph or a video. It is a rugged and weatherproof camera designed for extended and unmanned use outdoors.
Most cameras come with a strap that allows it to be hung from a tree and a lock to prevent theft. It will automatically take a picture when it senses motion. Each image is stamped with Exif Data which includes the date, time it was recorded, as well as a number of other data points. The game camera will usually function day and night by sensing game out to around 100 feet.