Watch design

David Pogue writes on How to Build a Usable Watch

Good interface design is darned hard:

"Your inclination is to stuff a lot of features into your product — “hey, that’ll make it sell, right?” And yet every feature has to go somewhere. It has to fit on some screen, in some menu, under some keystroke. So the more you stuff in, the more difficult to use your product becomes, and the less pleasure it will bring your customers.

I had recently bought my daughter a $9 digital watch from Wal-Mart. It had three buttons. You were supposed to be able to perform all of the watch’s functions using only these three buttons: set the time, set an alarm, turn the alarm on and off, start and stop the stopwatch, record lap times, and so on.

It was, as you can guess, a disastrous user interface. Every button wound up performing multiple functions. Double-press. Press-and-hold. Press two at once. There’s no possible way you could master it without the 3-by-3 inch sheet of instructions in 2-point type."

Read his students' suggested design improvements at:
http://pogue.blogs.nytimes.com/2011/08/11/how-to-build-a-usable-watch/