The i1D2 contains the license for your HP DreamColor APS software. To enable the software, just plug your i1D2 into a powered USB port.
The HP DreamColor APS software has a site license, which means that you can use it on as many workstations as you like, within your location. However, the site license does not include other locations, such as client sites, multiple locations, or the home of your BFF who is getting into photography. Additional copies of the HP DreamColor APS software can be purchased here if needed.