> I was thinking of the following input scheme: > - rotate in any direction to get the first letter/digit, > - rotate in the opposite direction for the second, > - change direction again for the third, etc. > - to delete one letter, press the center button, after which > you turn in the direction you want. > - waiting 0.5 s (or similar) ends input and starts validation. > > The display would show the current letter/digit plus briefly > the last one, so one could be sure that the button press didn't > alter it. >
I'm tempted to do this in javascript to see how it works :P > > The display has room for about three lines of reasonably large > text (~12 pt, bold and illuminated). During code entry, one line > could show the alphabet in a tiny (4 pixels wide) font. That > would be hard to read but all you really need to see is the > rough shape of letter. There would also be room for making some > of the letters a little larger. > To clarify, it would be something like following, no? > > 4. If you leave the device on without interaction for more than 2 mins > > (e.g), the screen will be powered off and the cpu will go to deep sleep. > > I'm thinking of the following states (among other, more specialized > ones): > > - off: minimum power consumption, password safe is locked, > pressing the button a brief moment (longer than just hitting it, > to reduce accidental activation), turn on and show the PIN > dialog. > > - standby: display is off, LED is lit (possibly via PWM, to save > power), password safe is open. Switches to "off" after a while > or when turning the wheel. Goes to "open" when pressing the button. > > - PIN dialog: as described above. With automatic return to "off" if > left idle for more than a couple of seconds. > > - open: display is on, password safe is open. Goes to "standby" if > idle for a while. > > It doesn't have sense to have a off status if you can poweroff the device with a button, no?
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