Monday, October 7, 2013

Elevator Buttons -- Push to select and unselect

I've always wondered why we can't "un-select" a floor on an elevator when we select the wrong one.  When we push a call button to go up, and we meant down, we also can't change our selection.
Now that all elevators have been modified to be more wheelchair friendly, they are also now very friendly for small children to push the buttons.  If a child pushes a bunch of buttons selecting many floors, there's no way of cancelling all of those in error.
Everyone is familiar with click on/click off now -- it seems very natural!  Why hasn't any elevator company implemented it in their designs?