information efficient text enty using dasher

[Andreas Kostyrka]

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And it's completely not relevant, as the Neo needs an input method that
works for local apps ;)

Andreas

Ted Gilchrist wrote:
> There's always the multipress key input method:
> 
> http://www.robocal.com/prod/robocal/robodicto.php
> 
> It's low-tech, and works on all phones, since the logic is in the
> server. I admit it's a bit tedious, but, ...
> 
> Ted Gilchrist
> 
> On 5/31/07, *Thomas Gstädtner* <thomas at gstaedtner.net
> <mailto:thomas at gstaedtner.net>> wrote:
> 
>     Thank you for this post chris, nice to know, that dasher was running
>     on a so old and slow device already.
>     I'm see the things like you do: Touchscreen means you always have to
>     stare at the device for making inputs.
>     Like I said - I had a nokia 7710 before and it was nearby impossible
>     to use it blind. Even if you had a fullscreen T9-keyboad with huge
>     keys you had to check the display, because you cannot feel which
>     "key" you are pressing.
>     I also like the "driving a car" comparison :)
> 
>     2007/5/30, Chris Ball < cjb at laptop.org <mailto:cjb at laptop.org>>:
> 
> 
> 
> 
>         Hi,
> 
>         I'm one of the Dasher developers, and am also interested in
>         hacking on
>         OpenMoko.  So, getting Dasher going is fairly likely.
> 
>            > This pretty much means that you have to stare at the
>         display all
>            > the time when inputting text.
> 
>         Yes, this is the main difference between Dasher and
>         T9.  However, the
>         comments about needing a lot of screen resolution or CPU aren't
>         so true
>         -- we did Dasher on the iPaq seven years ago at full-speed and
>         using
>         150x150 resolution, and it works great.  The reason we get away with
>         not so much resolution is that you're only really ever being
>         asked to
>         choose between five or so probable letters at each turn, and it
>         doesn't
>         take much screen space to show those, and you can predict
>         whereabouts
>         you're headed by knowing the alphabetic order of which character
>         comes
>         next.
> 
>            > Sure - in theory, dasher may approach arithmetic coding in
>         terms of
>            > information input.
> 
>         (I'm not sure what you mean by "approach" -- Dasher *is* an
>         arithmetic
>         coder, and matches the information-theoretic efficiency of one in
>         terms of bits/input to characters/output.)
> 
>            > But unless you can do the coding in your head, you've got
>         to stare
>            > at the screen, making it less useful for environments where
>         you've
>            > got vibration, sunlight, walking down the street, or less
>         likely
>            > for a phone, if you're blind.
> 
>         Yes, but the Neo doesn't have a keyboard, and doesn't have keys
>         for T9
>         that you can use without looking at the screen, so I don't think
>         this
>         is a useful criticism.  Dasher's very tolerant of vibration and
>         mistakes,
>         unlike T9 on a touchscreen -- it's much like driving a car, in
>         that if
>         you oversteer or understeer you just correct yourself later, because
>         it's all about navigation and where you end up.  We can type
>         easily over
>         20wpm on the iPaq with a touchscreen and stylus.
> 
>         Thanks!
> 
>         - Chris.
>         --
>         Chris Ball   <cjb at laptop.org <mailto:cjb at laptop.org>>
>         One Laptop per Child
> 
> 
> 
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> 
> 
> 
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> 
> 
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