A flag holder for vehicles\u2014such as motorcycles and all-terrain vehicles\u2014mounts on a generally horizontal panel having a bolt hole stamped, punched or drilled therein. The device includes a package or a bag made of a material that is at least partly porous or permeable to water vapor. The flanges of the shackle and the lugs each include a hole. It is determined whether the document has been previously processed by the imaging device. Each corner exhibits at least a tract, arranged in proximity of a respective corner of the corners, which is downwards-inclined with respect to the first in-view surface on a perpendicular plane to the first in-view surface.