Windows Phone devices are modern devices. As such, they usually have few sensors such as built-in accelerometer, A-GPS, light sensor, magnetometer, etc. Windows Phone minimum hardware spec requires that all Windows Phone will have at least 4 of them – A-GPS, Accelerometer, Compass and Light sensors. While accelerometer and A-GPS were available for developers with first version of Windows Phone, there are some new sensors which were added with Mango. The hardware market is not standing still, thus...