A hygienic passage (also known as the hygienic lock), where access control must be 100% guaranteed, is very often divided using stainless steel fencing. Areas where hygiene shafts, wash troughs and hand disinfection systems are placed are often square or rectangular surfaces. In order to steer employees and visitors in a fixed walking direction, fencing is installed at strategic points. In this way, the aim is to achieve absolute process reliability in terms of hygiene.