Destination dispatch

Using destination dispatch, passengers request travel to a particular floor using a keypad, touch screen, or proximity card (such as a hotel room keycard) and are then directed to an appropriate elevator car selected by an algorithm.

[1] It did not come to full fruition at the time, as the mechanical relays that controlled elevators were not well suited for complex algorithms, and the patent expired in 1977.

[2] Port-El systems were installed in the Law School at the University of Sydney, as well as in the Australian Milk Marketing Board offices.

Port allowed his invention's patent to expire in 1977, though he is recognised as the first inventor to propose and design the first destination dispatch elevators.

[citation needed] Based on information about the trips that passengers wish to make, the controller will dynamically allocate individuals to elevators to avoid excessive intermediate stops.