Today's KNOWLEDGE Share : Touchscreen Car controls

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Today's KNOWLEDGE Share

Despite having worked on automotive HMI as a product designer, I prefer physical controls in cars over digital infotainment systems. Sometimes it feels like manufacturers are designing for iPad kids and tech enthusiasts instead of regular A-to-B drivers.


Touchscreen car controls are 2-4 times slower than physical buttons.


Touchscreens increase reaction times +30-57%. Legally drunk drivers: reaction time +12%. Car's touchscreen impairs more than a couple of beers.


Physical controls:

- One motion: turn knob left/right

- Works by feel without looking

- Instant response

- Same location every time

- Works with gloves

- Muscle memory kicks in

- Tactile feedback confirms action


Touchscreen controls:

- Multiple taps through menus

- Requires visual attention to locate

- Lag between tap and response

- Interface changes with software updates

- Fails with gloves/wet fingers

- Must relearn after updates

- No confirmation until you look at display (is haptic feedback is enough?)


VW: "We will never make this mistake anymore. It's a car, not a phone."


The best interface is the one you never have to think about. Especially when you're driving the highway at 100+ km/h.


source : Alex Galagan

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