A few weeks ago I showed how to represent computations involving geo locations or accelerometer readings as queries over RxLINQ event streams (i.e., IObservable collections). In both instances the event source was one of the sensors that is on board of every Windows Phone 7 device. What happens when...

  My previous  blog posts on WP7 Code covered the GeoLocation API, a surface area that provides access to the phone’s location based on signals picked up by one of its radios. However location alone is probably not sufficient for mobile applications. This post shows how to take Windows Phone...

  Visual Studio and the Windows Phone Developer Tools make building software for the Windows Phone similar to building desktop or browser applications. However, beyond these similarities crafting a phone application differs fundamentally from building an application aimed at a device with a keyboard...

  Besides providing geographical coordinates , computing distances , and making reverse geocoding service requests Windows Phone 7 can also signal when it is moved outside of a perimeter. The buzzword for this scenario is Geofencing , and this post shows how to implement it (when the geofence is...

  My previous blog posts showed how to obtain location as an event stream from the Windows Phone 7 GeoLocation API, and how to translate lat/long position readings into distances. Here I show how to build an application that combines data from the phone’s geolocation subsystem with data from the...

  In my previous post I showed the most interesting code fragments for a location-aware Windows Phone 7 application. The code generates an event stream corresponding to location readings from the phone’s location subsystem. However, there are many applications that instead of lat/long readings need...

  I’m kicking off a series of blog posts focused on writing Windows Phone 7 code with one of the APIs that will probably attract many developers interested in getting their feet wet: GeoLocation . Building this code requires: The Windows Phone Developer Tools , fresh off the press as of September...