Accelerometer brainstorming

Joseph Reeves iknowjoseph at
Fri Mar 28 14:31:20 CET 2008

To join this post and your previous post, how about using the
accelerometers to enhance the GPS?

Not just for power saving, but say you drive through a tunnel; the GOS
loses connectivity but the device still knows your location based on
accelerometer data. There are commercially available in car navigation
systems that already employ this technology.


On 28/03/2008, Alexey Feldgendler <alexey at> wrote:
> Just like my recent post about using GPS to enhance the phone, I'll try to
>  explore the synergy opportunities for the accelerometers that Neo has.
>  Once again, some of this might have already been discussed.
>  * Intuitive mute: put the ringing phone on a flat horizontal surface
>  (table) with its screen facing down to stop the ringing. Intuitive for the
>  user and easy to detect with the accelerometers. Could also be used to
>  hang up the current call. The gesture is very distinguishable and is hard
>  to misinterpret because there aren't many situations when the user would
>  normally put the phone on the table screen down.
>  * Vibration control: when the phone is lying flat, either with its screen
>  up or down, don't vibrate, so as to not produce the annoying loud noise.
>  Ring instead, or do something else. Maybe make a weaker vibration, if the
>  vibrator can do that.
>  * Step counter: use the accelerometers to count steps when walking or
>  running. Some people use dedicated devices for that.
>  * GPS power saving: you can't move if you don't accelerate, so don't do
>  power-expensive location detection until acceleration is detected. Once
>  it's detected, start monitoring the location and keep doing it. Stop
>  monitoring once the position stops changing for a while.
>  --
>  Alexey Feldgendler <alexey at>
>  [ICQ: 115226275]
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>  community at

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