You need a Bing Maps key to make use of the Bing Maps model decoder. You can obtain these keys through the Bing Maps developer portal at http://www.bingmapsportal.com.
See How to obtain a Bing Maps key for detailed steps on how to obtain a key.
You can find more licensing information and contact experts at http://www.microsoft.com/en-us/maps/licensing/licensing-options. Such a license can be obtained directly from Microsoft, or through Microsoft’s Partner network. Prices may vary according to the volume of licenses purchased, the duration of the license and the intended scope of use.