Entrances, gates, doorways and locks fulfill a genuine need for security and privacy. However, they are also an obstruction to free flow of traffic and a hindrance to movement in general. Millions of man-hours are wasted each day and unimaginable inconvenience is created by the need to repeatedly open and close entrance systems manually in homes, commercial enterprises and factories.
It leads to inefficient deployment of labor, wasteful use of productive time and a general reluctance to movement.