And for those commands that do not deserve a physical button and are only accessible via touch, please adhere to a few simple rules.
1. Put them always in the same place. Especially the "back" or "exit" button!
2. Each button should do one thing, not switch between 3 or more modes that you should look to understand which one you've just activated. Negative example: one button to cycle from cuise control, to drive assist, to speed limit, and back to off.
3. The area where a tap is interpreted as a button press should not also be where a swipe is recognized. In moving vehicles it is too easy for your finger to swing just an inch before touching the screen.
4. The active area of a virtual button must be large, larger than the icon it displays, so large that you shouldn't be distracted from driving just to aim at it!
1. Put them always in the same place. Especially the "back" or "exit" button!
2. Each button should do one thing, not switch between 3 or more modes that you should look to understand which one you've just activated. Negative example: one button to cycle from cuise control, to drive assist, to speed limit, and back to off.
3. The area where a tap is interpreted as a button press should not also be where a swipe is recognized. In moving vehicles it is too easy for your finger to swing just an inch before touching the screen.
4. The active area of a virtual button must be large, larger than the icon it displays, so large that you shouldn't be distracted from driving just to aim at it!