I am currently doing a project for a government who wish to introduce the use of body cameras among their labour inspectors and health & safety inspectors when conducting visits to business premises. They are thinking of combining this with the use of GPS so that the camera automatically switches on when the inspector reaches the business and automatically switches off when he/she leaves the business. Does anybody know of any research on the impacts of the usage of such body cameras, such as in related areas (e.g., policing)?