When thinking about how (real-world) traffic lights work, I wonder if there is a more intuitive way to display the yellow light. The meaning of Green and Red are states: Green: Ok, you can go! Red: ...
What is the reason many elevators have concave shaped buttons. Like this: Any special reason behind this?
What is the best user interface you have ever used/seen in real-world or real-world objects? [closed]
Exclude all web/mobile/application/computer software interfaces.
Small and big light switch compared: It's strange that this usually differs by country. The big ones are easier to hit, but the small ones provide better feedback (if you don't immediately see the ...
Do manufacturers of markers produce different shapes for each type (whiteboard/permanent) so you can tell the difference by touch?
In the sense that this is an interface with the user of pens, I thought this might be an acceptable place to ask this question, but if it's just application interfaces, then please remove or close ...
Perhaps you've seen one of these before. A couple of inches above and below the magnetic stripe reader are protrusions that allow just enough room to swipe a credit card. The barriers are a ...