Right now, an elevator does not know that you need it until you get to the elevator lobby, and press the Up or Down button. It also does not know how many people are waiting at each floor. So you have to wait. And wait… But in the future, you will be able to call an elevator ahead of time. You will be able to use a phone, web, PDA/Blackberry and/or a button on inside of the office door on your way to the lobby. So the elevator system will know that you need an elevator going up or down — ahead of time. It will also know how many people would need an elevator at each floor based on how many calls it gets from separate sources. So you will have a better chance of having the elevator waiting for you when you get to the lobby, for a change.
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