Body worn video (police equipment) prepared for the United States Department of Justice in 2016 is that body worn cameras "are cameras with at least one microphone and internal data storage, and allow audio/video footage to be stored and analyzed with compatible software. The cameras are typically located on the police officer's chest or head". Wearable cameras are often utilized by law enforcement to record their interactions with the public or gather video evidence at crime scenes. Current body cameras are much lighter and smaller than the first experiments with wearable cameras as early as 1998. There are several types of body cameras made by
British Army during the Napoleonic Wars generally of white cotton duck canvas for summer use, and grey woolen trousers were issued for winter wear, although considerable variation exists in the color of the woolen trousers. Originally, the white trousers were cut as overalls, designed to be worn to protect the expensive breeches and gaiters worn by the rank and file, although on campaign, they were often worn by themselves; a practice which was later permitted except on parade. Soldiers were also issued with grey greatcoats starting in 1803. From the last years of the eighteenth century, the bicorne hat was replaced by a cylindrical "stovepipe" shako.