Why do macbooks have motion sensors?

Discussion in 'MacBook Pro' started by DannyBres, Nov 3, 2007.

  1. DannyBres macrumors 65816

    DannyBres

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    Oct 30, 2007
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    UK
  2. Eidorian macrumors Penryn

    Eidorian

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    Mar 23, 2005
    Location:
    Indianapolis
    #2
    To lock the hard drive platter during a sudden acceleration.
     
  3. EricNau Moderator emeritus

    EricNau

    Joined:
    Apr 27, 2005
    Location:
    San Francisco, CA
    #4
    They have an SMS (Sudden Motion Sensor) to detect a fall. ...If it is dropped, the HD takes preventative measures to try and escape damage (or at least protect your data).
     
  4. jamesarm97 macrumors 65816

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    Sep 29, 2006
    #5
    And to be used for cool theft / alarm sensors (iAlertU).

    - james
     
  5. psychofreak Retired

    psychofreak

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    May 16, 2006
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    London
    #6
    There are many 3rd party uses, the coolest being changing desktops via hitting a Mac (with VirtueDesktops) and some games...
     
  6. jamesarm97 macrumors 65816

    Joined:
    Sep 29, 2006
    #7
    Yeah, I have seen those but could not get past the wacking my computer screen thinking it would damage the HDD or screen somehow.

    - James
     
  7. psychofreak Retired

    psychofreak

    Joined:
    May 16, 2006
    Location:
    London
    #8
    Its hardly a whack needed, in fact the sensitivity is user adjustable, and can be a light tap, no worse to the HD than pressing your fingers down to type fast...
     
  8. mkrishnan Moderator emeritus

    mkrishnan

    Joined:
    Jan 9, 2004
    Location:
    Grand Rapids, MI, USA
    #10
    Well, do bear in mind, that, ironically, the SMS is still serving its original purpose, which is exactly to avoid your HD being damaged in just such a case as this. ;) I.E. if the HD parks instead of the screen changing, you're hitting it way the frack™ too hard. :D
     

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