I have seen elevators, usually in a big building with a lot of elevators, that do act that way (presumably using weight sensors?). I’ve read that some elevators

I have seen elevators, usually in a big building with a lot of elevators, that do act that way (presumably using weight sensors?). I’ve read that some elevators also have a “kid mode” that does the opposite: if some kid pushes all the buttons as they leave (just for the lolz), the elevator cancels the calls.