I’m currently working on a Windows Phone 8 project that requires two devices. Those devices talk to each other through a SignalR service. Thanks to Hyper-V I’m able to test/debug this project on two instances of the Windows Phone 8 emulator (I usually pick the WVGA and WVGA 512MB versions). What I used to do is deploy the XAP to one emulator and debug it on the second. I need to do this every time I change the app, I got bored of doing this manually so it was about time to get this automated.