The Bhutanese authorities strictly prohibit export of religious antiquity or antiques of any type. Cameras, computers and other personal electronic gadgets may be brought into the country but they must be listed on the customs form provided on arrival at Paro Airport and will be checked on departure. Tourism Policy: Tourism to Bhutan was privatized by the Royal Government in 1991. Here the tourism industry is founded on the principle of sustainability, meaning that tourism must be ecological and environment friendly, socially and culturally acceptable and economically viable. To maintain these objectives the number of tourists visiting Bhutan are kept to an environmentally manageable level.