1) A clock that can determine whether or not it is being held upside down. The user flips into “set time” mode by literally picking up the clock and flipping it upside down. While upside-down, the user can rotate the clock towards them to move the time forward, or backward to move it backward. The time is set by re-righting the up side of the clock.
2) A clock with two handles, one on each side of it, which can be gripped and twisted. The user picks up the clock by the hands and twists with both hands to set the time in either direction. You would twist the left handle towards you and the right handle away from you to move the time forward, and you would twist the left handle away from you and the right handle towards you to move the time backward. Yes, the affordances on this clock would be tricky, but honestly I just like picking things up and twisting them like that – setting your clock is annoying; making it like squeezing a towel might let you take some of your anxiety at the situation out on the clock. 🙂
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