I want to take a more conventional approach in this futuristic building without using key board. I am trying to create the same feedforward as the volume slider. The users will have similar experience with these sliders. Users slide different columns to change different digits.One number will pop up to indicate the digit number. Once the number is set, the user touch Enter. The triangle on the right indicates the building and shows where the current floor is. Once the floor has been passed, the light will fade. If they wish to cancel a floor, they can touch the cancel button next to the floor number. The interface is touch screen and has similar symbols for close, open and ring.

Bjiang_ID_Elevator Interface 2.0.jpg