Hold the doors! Usability in lifts.
Cliff Wilding
You're in the lift and someone's rushing to get in before the doors close. It's a classic problem in interface design - which button should you push. Quick!
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Lift door controls are typical of many web sites - the icons depict a technological perspective on the task, rather than matching the user's goal - in this case, the making the door become either open or closed.
The icons below depict the goal state, not the motor's action. Quickly, which one opens the doors?
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By designing with the user's goals in mind, web sites are much easier to use too!
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