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How Do I Deploy a Windows 8 App to Another Device for Testing?

If your developing a new Windows 8 app and you want to test it on another device (e.g. Surface), you’ll need to use a technique called sideloading. This can easily be done through a few steps that will be described in this post.

http://blogs.msdn.com/b/patricka/archive/2012/11/05/how-do-i-deploy-a-windows-8-app-to-another-device-for-testing.aspx