If you have a business that sees a good deal of daily foot traffic, then you should learn about automatically operated doors. Once you have a better understanding of them, you might decide to have them installed. Here is more information on automatic doors:  How the Doors Open An automatic door will have a sensor that senses when someone is approaching and signals to the door for it to open. The door will remain open until the sensor sends a signal to the mechanism letting it know there is no longer anyone present, then the door will shut.