Hi,
I hope this is what you mean:
this are switches with adaptive force feedback to make the manual input more intuitive and you don´t have to look on a display.
Imagine: in a car the driver has to do some inputs in the navigation system. He wants to selecet the fourth item in a list of 6 items.
The user rotates the switch and the stepper give a feedback for every item like a catch spring in a mechanical rotary switch.
At both ends of the list the stepper gives an increased feedback to the user like a stop pin in a mechanical rotary switch.
(but everything is controllable with software)
So the user can feel the end of both lists and can feel every single item while keeping eyes on the road.
Klaus