Intelligent elevators

 
Most elevator systems have a simple call button on the floor you're waiting on and send you the most suitable next available one (based on whatever heuristic is implemented).

Sometimes you wait... and wait... and wait... as all the people get on and off on the floors between where you are and where the elevator was when you called it.

Then there are the ilk who stop the elevator to travel one or two floors - perfectly able bodied folk too - and always when you're attempting to travel many floors. TAKE THE STAIRS YOU LAZY GITS!
(In my experience it's usually been for one of their numerous daily smoke and/or coffee constitutionals (in addition to regular break time) which was another source of personal irritation as I consume neither.)

Fortunately one manufacturer (I can't remember which) with smart designers has come up with some relief :-)

At a Sydney office where I worked recently, the elevator suite had the building's floor levels as its call buttons. Yes, alarm bell and door hold aside, there were no buttons in the elevator cars! You pressed the floor you wanted to go to before you got anywhere near the near them - especially if you used the one beside the main building door. The system would then send one or more elevators based on which floors were currently required and indicate which ones were going to which floors.

Brilliant concept - love it - wish it was in place everywhere!