iPhone SDK shake and vibrate -

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How can vibrations be used while moving the iPhone? Here's my code: 

  #pragma mark - - (zero) accelerometer: (UIAccelerometer *) Accelerometer did the speed: (UIAcceleration *) acceleration {{if (acceleration.x> KAccelerationThreshold) acceleration .y & gt; KAcalAltration Threshold || Acceleration.exe> KAkcAlertation Threshold) {** // Vibrate it! You can do this:  
  Audio service place system (kSystemSoundID_Vibrate);  
 
 Be sure to ensure the audio toolbox framework.

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