Accelerometer defines the force applied to the Windows Phone 7 device which can be used to determine the measure of direction that has been applied by the user by moving the device. This values are represented as a 3D vector coordinates in X, Y and Z axis. Using the Accelerometer class present in the library, we can programmatically control the device's 3D acceleration. In this article we will learn about the class that we will use to demonstrate the same feature. Read to learn more about it.