In this deep dive,*Sean McKenna from Windows Phone*and Greg Hodgal discuss how to program for Windows Phone 7 using the accelerometer.
An accelerometer is a sensor that measures acceleration forces such as gravity or the forces caused by moving the sensor. All Windows*Phones have at least one accelerometer sensor that, when accessed by the managed Accelerometer API, can be used to provide input to Windows*Phone applications including both Silverlight for Windows*Phone and XNA for Windows*Phone applications.

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